Category: Construction Costs
The United States Has Too Few Road Tunnels
The Francis Scott Key Bridge in Baltimore collapsed after a drifting freighter hit one of its supports; so far, six people are presumed dead. Immediately after the disaster, people were asking if it could be prevented, and it became clear that it is not possible to build a bridge anchor that can withstand the impact of a modern ship, even at low speed. However, it was then pointed out to me on Mastodon that it’s not normal in Europe to have such a bridge over a shipping channel; instead, roads go in tunnel. I started looking, and got to a place that connects my interest in construction costs with that of cross-cultural learning. Europe has far more road tunneling than the US does, thanks to the lower construction costs here; it also has better harmonization of regulations of what can go in tunnels and what cannot. The bridge collapse is a corner case of where the American system fails – it’s a once in several decades event – but it does showcase deep problems with building infrastructure.
Road tunnels
The United States has very little road tunneling for its size. This list has a lot of dead links and out of date numbers, but in the US, the FHWA has a current database in which the tunnels sum to 220 km. Germany had 150 km in 1999, and has tendered about 170 km of new tunnel since 2000 of which only 48 are still under construction. France has 238 km of road tunnel; the two longest and the 10th longest, totaling 28 km, cross the Alpine border with Italy, but even excluding those, 210 is almost as much as the US on one fifth the population. Italy of course has more tunneling, as can be expected from its topography, but France (ex-borders) and Germany are not more mountainous than the US, do not have fjords and skerries like Norway, and don’t even have rias like Chesapeake Bay and the Lower Hudson. Japan, with its mountainous island geography, has around 5,000 km of road tunnel.
The United States builds so few tunnels that it’s hard to create any large database of American road tunnels and their costs. Moreover, it has even fewer urban road tunnels, and the few it does have, like the Big Dig and more recently the Alaskan Way Viaduct replacement tunnel, have become bywords for extreme costs, creating distaste even among pro-highway urban politicians for more and leading to project cancellations. With that in mind, the State Route 99 tunnel replacing the Alaskan Way Viaduct is 3 km long and cost $2.15 billion in 2009-19, which is $2.77 billion in 2023 dollars and $920 million/km, with just four lanes, two in each direction.
In Europe, this is not at all an exhaustive database; it represents where I’ve lived and what I’ve studied, but these are all complex urban tunnels in dense environments:
- Stockholm: the six-lane Förbifart Stockholm project to build long bypass roads in Stockholm using congestion pricing money, after acrimonious political debates over how to allocate the money between roads and public transport, comprises 17 km of tunnel (plus 4 km above-ground) including underwater segments, for an updated cost of 51.5 billion kronor in 2021 prices, or $6.97 billion in 2023 PPPs, or $410 million/km. The project is well underway and its current cost represents a large overrun over the original estimate.
- Paris: the four-lane A86 ring road was completed in 2011 with 15.5 km of new tunnel, including 10 in a duplex tunnel, at a cost of 2.2 billion €. I’ve seen sources saying that the cost applies only to the duplex section, but the EIB claims 1.7 billion € for the duplex. Physical construction was done 2005-7; deflating from 2006 prices, this is $4.18 billion in 2023 PPPs, or $270 million/km. This is a tunnel with atypically restricted clearances – commercial vehicles are entirely banned, as are vehicles running on compressed natural gas, due to fire concerns after the Mont-Blanc Tunnel fire.
- Berlin: the four-lane 2.4 km long Tunnel Tiergarten Spreebogen (TTS) project was dug 2002-4, for 390 million €, or $790 million in 2023 PPPs and $330 million/km. This tunnel goes under the river and under the contemporarily built Berlin Hauptbahnhof urban renewal but also under a park. The controversial A100 17th segment plan comprises 4.1 km of which 2.7 are to be in tunnel, officially for 800 million € but that estimate is out of date and a rougher but more current estimate is 1 billion €. The exchange rate value of the euro today belies how much stronger it is in PPP terms: this is $1.45 billion, or $537 million/km if we assume the above-ground section is free, somewhat less if we cost it too. The 17th segment tunnel is, I believe, to have six lanes; the under-construction 16th segment has six lanes.
Crossing shipping channels
The busiest container ports in Europe are, by far, Rotterdam, Antwerp, and Hamburg, in this order. Rotterdam and Antwerp do not, as far as I’ve been able to tell from Google Earth tourism, have any road bridge over the shipping channels. Hamburg has one, the Köhlbrandbrücke (anchored on land, not water), on the way to one of the container berths, and some movable bridges like the Kattwykbrücke on the way to other berths – and there are plans to replace this with a new crossing, by bridge, with higher clearance below, with a tunnel elsewhere on the route. The next tranche of European ports are generally coastal – Le Havre, Bremerhaven, Valencia, Algeciras, Piraeus, Constanța – so it is not surprising the shipping channels are bridge-free; but Rotterdam, Antwerp, and Hamburg, are all on rivers, crossed by tunnel.
American ports usually have bridges over shipping channels, even when they are next to the ocean, as at the Ports of Los Angeles and Long Beach. This is not universal – crossings in Hampton Roads have tunnels – but it’s the trend. Of note, the US does occasionally tunnel under deep channels (again, Hampton Roads); that the Netherlands tunnels in Rotterdam is especially remarkable given how Holland is a floodplain with very difficult tunnel construction in alluvial soil.
Hazardous material regulations
Tunnels do not permit all traffic, due to fire risk. For example, the Mont-Blanc Tunnel requires vehicles heavier than 3.5 tons to undergo a safety inspection before entering to ensure they don’t carry prohibited dangerous goods. In Europe, this is governed by the ADR; all European countries are party to it, even ones not in the EU, and so are some non-European ones. Tunnels can be classified locally between A (no restrictions) and E (most restrictive).
The United States is not party to the ADR. It has its own set of regulations for transportation of hazardous materials (hazmat), with different classifications – and those differ by state. Here are the rules in Maryland. They’re restrictive enough that significant road freight had to use the Key Bridge, because the alternative routes have tunnels that it is banned from entering. Port Authority has different rules, permitting certain hazmat through the Lincoln Tunnel with an official escort. Somehow, the rules are not uniform in the United States even though it is a country and Europe is not; Russia and Ukraine may be at war with each other, but they have the same transportation of dangerous goods regulations.
Costs Per Rider and Willingness to Build
At the Transit Costs Project, we study the costs of urban rail lines per kilometer. This, with our usual controls, is a rough indicator of how efficient a city’s infrastructure construction program is. However, cost-effectiveness is different from efficiency, and is better measured not by just the cost but also the benefits, which are measured by ridership. Thus, cost-effectiveness is best measured by the cost of each project per rider. So what does it mean to compare different cities by their costs per rider, rather than per kilometer?
The answer is, “not much,” at least not as far as efficiency or good decisionmaking. In fact, while some projects persistently have costs per rider that are too high to be cost-effective (for example, it’s endemic to airport extensions), some cities have costs per rider that are too low, such as Berlin. The issue here is that if municipal or state decisionmaking is healthy, it will build cost-effective lines; if a line under discussion has a very high benefit-cost ratio, or equivalently a very low cost per rider, it means it should have been built long ago, and it speaks poorly to the local decisionmaking that it hasn’t been built already, as is unfortunately the case in Berlin.
Cost per rider and cost-effectiveness
As always, let’s start with Second Avenue Subway Phase 1, the project that launched my interest in construction costs and the Transit Costs Project writ large. The projected daily ridership is 202,000; the line came close to it in 2019, reaching about 163,000 (see data here; I’m taking boardings for the three new stations, adding the growth in ridership at Lexington/63rd, and multiplying by two to account for disembarkings), and would have likely reached projection by now but for the pandemic. The cost, in 2023 dollars, was $6.23 billion, or about $31,000 per projected weekday trip.
For another anchoring number, let’s use the Stockholm Metro’s entire construction from the 1940s to the 1970s. This is useful because in addition to costs per rider, there is a published ex post benefit-cost ratio, thanks to the work of Maria Börjesson. The cost of that system, in 2023 PPP dollars, was $3.7 billion, with a ridership of 1,265,900 per workday in 2019, or $2,900/rider, while the benefit-cost ratio is 6 without taking agglomeration into account, or 8.5 with. This does not mean that the value of a rider is only about $24,900; this was the value in the economic situation of postwar Sweden, a country that was substantially poorer than the Sweden of today. In 2023 PPP terms, Sweden’s GDP per capita in 1965, about midway through the opening of the original system, was about $19,400; today, Sweden is 3.5 times richer, and the US is 17% richer than Sweden.
The benefits of urban travel are largely proportional to GDP per capita. The economic benefits of agglomeration are proportional to the value of the economy writ large, and so are the benefits of reduced travel time, which in benefit-cost analyses are usually taken to be proportional to the average hourly wage. Conversely, the ability of a government to spend money on desired outcomes is proportional to its tax base, i.e. the size of its economy. All of this is approximate, but all we’re doing is first-order approximate analysis anyway, and so correcting for GDP per capita is valuable.
As it is, the difference between American and Swedish GDP per capita boils down entirely to working hours. Swedes work shorter hours than Americans, as they, like nearly everyone else in Europe, get much longer vacation time; as of 2022, Sweden’s GDP per hour worked was, by a rounding error, slightly higher than the US’s. However, at the same time, the daily ridership numbers for Sweden are specifically drawn from winter workday ridership, to avoid reporting figures from when ridership is lower during the summer vacation season, and the same is true for daily ridership counts in France. If we give Sweden and France credit by looking at ridership when people aren’t on vacation, we must compare the cost per rider with GDP per capita and not GDP per hour.
The upshot is that countries should be building metros up to a maximum capital cost per rider that’s about as large as their GDP per capita. The $24,900 computation for 1960s’ Sweden is ex post, and usually the ex ante benefit-cost ratio must be at least 1.2 or 1.3 for the project to go ahead due to risk. For light rail the allowable cost should be lower, and for bus projects it should be lower still, due to the higher lifetime operating costs; but for metros and metro-like urban rail projects (such as largely grade-separated light rail, or commuter rail tunnels like Citybanan), this analysis should hold. Second Avenue Subway Phase 1, which opened in a United States with a GDP of $73,300/capita in 2023 prices, is thus very cost-effective; Phase 2, budgeted at something like $70,000/rider in today’s prices, is marginal but makes it (in 2022, US GDP per capita in 2023 prices was $80,300).
Some more costs per rider
Our database of construction costs per km is largely complete, but we don’t have much ridership data. Worse, the costs per rider we do have have some biases. We have better information for the US and Canada than elsewhere, and for Europe than the rest of the non-North American world. Costs are also likeliest to be reported for megaprojects with notable delays or cost overruns and thus an incomplete database will be biased upward; large, international cities have better reporting in English than the rest and this introduces another upward bias in incomplete data (these are typically wealthy and therefore capable of affording a high cost per rider).
With that in mind, here are some (again, incomplete) examples:
- Crossrail cost $24 billion in 2023 PPP terms; ridership in late 2023 was 4.3 million a week, which is usually about 700,000/weekday, said to be above projections, with long-term projections rising to a million/weekday; on current ridership it’s $34,000/rider, and on future projections it’s $24,000.
- Paris Métro Line 14’s original section, opened by 2007, cost $2.44 billion in 2023 PPP terms; ridership in 2019, before more recent extensions and before corona, was 92 million, so around 320,000 per workday, which is $7,600/rider.
- Grand Paris Express was projected in 2021 to cost (in 2023 PPP dollars) around $65 billion, with a ridership projection of 2 million/day from 2022, and 2.3-2.4 million/day from 2012, for around $32,000/rider, or $28,000 if the older ridership projection is used.
- Milan Metro Line 5 cost $2.2 billion in 2023 PPP terms to date, and was said to carry 180,000 daily passengers in 2019, for $12,000/rider.
- Milan Metro Line 4 cost $2.63 billion, and was expected to carry 235,000 riders per day when complete, which would be $11,000/rider; it will be completed this year, but ridership so far is for only the half of the line that has opened so far ans is also still somewhat suffering from corona.
- The U-Bahn extensions in Berlin that are currently in development hell include U8 to Märkisches Viertel projected at 13,160€/rider (around $21,000 in 2023 PPP terms), a U6 extension to the former Tegel Airport projected at 27,200€/rider (around $43,000), and a U7 extension to the current BER airport projected at 23,000€/rider (around $36,000), among others brought up by the new coalition.
Willingness to build and Berlin’s problem
The above numbers should not be taken to mean that Italy and Germany are more cost-effective about metro construction. To the contrary, they indicate that they are leaving value on the table by not building.
Germany has a GDP per capita of $66,000 in PPP terms. The benefit-cost ratios of the U-Bahn extensions in Berlin that are being discussed but not actually brought forward and built are very high, and the U8 extension to Märkisches Viertel is scratching a ratio of 4. It is irresponsible that there isn’t a massive construction plan not just under discussion but in design and soon physical construction. This must include not just those lines but also others to be added until the benefit-cost ratio of the marginal line falls to slightly more than the minimum that deserves funding.
Italy has the same problem. No matter how pessimistic one’s view of the future of the economy of Italy is, the metro lines it is currently building, at least in Milan, are so cost-effective that there have to be more of them. In the 2010s, Italy was in a budget crunch and ended up using public-private partnerships to keep debt off-books, at very high implied interest rate based on the rate of payment to the concessionaire, about 8%. Today, fundamentally, even a stagnant economy with a GDP per capita of $55,000, which may finally overtake its 2007 peak this year, should be building more if the current extensive margin of Milan Metro construction is not even in the teens of thousands of dollars. Perhaps the benefit-cost ratios for Sweden rely not just on Sweden’s GDP per capita of the 1960s but on that of today, after 60 years of growth; but then even absent any of this growth, 55/3.5 > 12.
Paris showcases a healthier situation: the success of M14 endeared the region to driverless metros with longer interstations than the older metro lines but shorter ones than the RER, and with further growth in the region, the state decided to build the 200 km Grand Paris Express to improve circumferential rail service and add more fast radial connections from the suburbs to the city not along the RER. France’s GDP per capita is around $58,000 in PPP dollars; some elements of GPE may be marginal, but the project writ large has a solid benefit-cost-ratio starting with a 2.
Spain is like France in that when it can build, as it could before the Great Recession and as it can now after having recovered, it does. This is the right way to do it: low costs per km should translate to massive subway expansion. If you’re Madrid, you can build lines that would be completely ridiculous anywhere else in terms of land use, like MetroSur, because it’s cheap.
A Paris or Berlin cannot be so profligate as Madrid. Building a line like MetroSur here, which in the Spanish context looks silly but does pass cost-effectiveness muster, would be an economic albatross. But medium-cost cities can still cover most of the built-up area with subway and commuter rail lines; Paris is doing so but Berlin is not.
The problem for Berlin is not quite austerity, which afflicted Southern Europe last decade, producing negative economic growth. In the last coalition, it was the two most left-wing parties, the Greens and Die Linke, which opposed U-Bahn construction. In their view, trams are preferable; they complain about the high construction costs of subways, but don’t meaningfully engage with why they’re still necessary for fast urban transport beyond the range of the handful of inner neighborhoods where people vote for the Greens.
That said, in the current coalition, there’s no real political left. SPD is in it, but under an atypically conservative leader in Franziska Giffey, and the more left-wing faction in the party, including the youth league Jusos, is sidelined. Both parties in the coalition, CDU and SPD, are committed to building those U-Bahn extensions. But then nothing is happening; Giffey is not competent enough to do it, and CDU is too wrapped up in anti-environmental populism to do something that pisses off some environmentalists but makes others happy.
This way, the low costs per rider projected for Berlin U-Bahn expansion are not a testimony to cost-effectiveness. They’re a testimony to political unwillingness to build, for largely petty reasons. It is wasteful to build a subway line with a very high projected cost per rider relative to the country’s wealth, but it is equally wasteful not to build one with a low projected cost per rider, and the latter is what is happening in Berlin, unfortunately.
Cost-Plus Contracting is Good
Because I write a lot about government waste, I get to interact with people who complain a lot about government waste, which exposes me to a range of views, some more reasonable than others. The less reasonable views themselves range from unhinged rants to things that sound like they could be true, that may even be true for parts of contracting other than public transportation or infrastructure megaprojects. It’s one of the latter views that I wish to talk about here. It’s all too common, in my experience, for people who complain about government waste in the United States to speak ill of cost-plus contracting, which they claim (incorrectly but plausibly) is a form of a waste and even (much less plausibly) fraud, in which contractors get paid regardless of how poor the job is. In truth, the only good way to build infrastructure megaprojects is with itemized contracts and with generous public-sector assumption of risk; this isn’t called cost-plus in the literature but itemization, but is close enough that from the perspective of citizen-activists it should be viewed as a cost-plus variant.
Itemization versus fixed-price contracting
Contracts can, broadly, be either itemized or fixed-price, the latter also known as lump-sum. A fixed-price contract has a single cost line for the entire project; an itemized contract instead prices each section, and certain elements that are agreed to be outside the contractor’s control, like materials, are adjusted automatically if prices on the world market change.
There are also mixed models. For example, in Stockholm, some contracts are fixed-price, some itemized, and others use an intermediate system called fixed price with adjustable quantities, in which some elements are itemized but others are not. Turkish construction contracts itemize about 65% of the costs in detail, covering the civil infrastructure, and then take each of the main sub-items of the other 35% (at the detail level of ventilation, power design, sewage, etc.) as a fixed-price contract.
In Southern Europe and Turkey, the items are public, published transparently by the government, as an anti-corruption measure. These are detailed, and take different costs of living into account, and thus in Italy the prices, published by the state, may differ by region. If the itemized prices are unrealistic, then the contractors are allowed to demand more, but those itemized lists help ground the contract.
This system far outperforms fixed-price contracts. We have standard references on this, namely Ryan (1, 2) and Bolotnyy-Vasserman, finding that itemization for power plants (in Ryan) or road maintenance (in Bolotnyy-Vasserman) leads to reduced overall costs, by about 20%. The reasons are that fixed-price contracting leads to increased friction in change orders, and that, relatedly, fixed-price contracting imposes risk on the private contractor, leading to higher bids for compensation. For this reason, all low-construction cost environments we’ve investigated itemize, to a significant extent. The Nordic countries are moving from itemized to fixed-price contracting under the influence of British practices and the requests of large international firms that are used to doing business in English-speaking countries or in other high-cost countries, and as they do so, their costs are moving from low to medium, in addition to other bad reforms.
So why do people think itemization is bad?
The big multinationals are just used to fixed-price contracts. In New York (where it’s usually not big multinationals), an additional issue is that the contractors prefer to be paid upfront, due to delays in payment under itemization. But more commonly, the contractors just don’t like having to give exact specifications, and are used to environments where they don’t and don’t notice how the costs in those places are much higher than in places that don’t govern in English.
But government contractors are hardly a popular figure among people who complain about government waste. So what gives?
I suspect that this is about the sight of the government assuming risk for something a private contractor does. The sight of a contractor complaining about a problem that the government then has to pay extra for is repulsive to the general public, which assumes that something shady is going on, regardless of whether it is. This leads to political pressure to insulate the public sector from unexpected changes.
The problem is that there is no way to fully insulate the public sector. Once the megaproject has been decided, the political cost for the government of walking away is larger than the economic penalties for the concessionaire. In practice, every attempt to privatize risk will get contractors to bid higher, while still not protecting the public from the risk of large cost overruns. Turkey is somewhat exceptional in this, but it still itemizes, and the way it enforces the maximum 20% cost overrun is by having so many contractors that it’s easy to blacklist malefactors; this is not available in richer countries with fewer, larger firms.
Janno Lieber Lies to New York About Costs and Regulations
After being criticized about the excessive size of subway stations designed on his watch, MTA head Janno Lieber fired back defending the agency’s costs. In a conversation with the Manhattan Institute, he said about us, “They’re not wrong that the stations are where the MTA stations add cost. But they are wrong about how they compare us – the cost per mile is misleading” (see discussion on social media here). Then he blamed labor and the fire code. Blaming labor is a small but real part of the story; this is common among the white-collar managers Eric and I have talked to, and deserves a separate explanation for why this concern is overblown. But the issue of the fire code is fraud, all the way.
I’ve previously seen some journalists and advocates who write about American construction costs talk about fire safety, which is mentioned occasionally as a reason designs cannot be changed. It’s not at all what’s going on, for two separate reasons, each of which, alone, should be grounds to dismiss Lieber and ensure he never works for the state again.
The first reason is that the fire safety regulation in the United States for train stations, NFPA 130, has been exported to a number of other countries, none of which has American costs or the specific American tradition of overbuilding stations. China uses NFPA 130. So does Turkey. Spain uses a modification. We can look at their designs and see that they do not build oversize stations. I’ve seen an environmental impact analysis in Shanghai, with the help of a Chinese student studying this issue who explained the main planning concerns there. I could write an entire blog post about China (not a 10,000-word case report, of course), but suffice is to say, if the train is projected to be 160 m long, the station dig will be that plus a few meters – and Chinese stations have mezzanines as I understand it. Spanish and Turkish stations have little overage as well; building a dig twice as long as the station’s platforms to house back-of-the-house spaces is unique to most (not all) of the Anglosphere, as design consultants copy bad ideas from one another.
Even the claim that NFPA 130 requires full-length mezzanines is suspect. It requires stations to be built so that passengers can evacuate in four minutes in emergency conditions, rising to six minutes counting stragglers (technically, the throughput needs to be enough to evacuate in four minutes, but with latency it can go up to six). The four minute requirement can be satisfied on the lettered lines of the subway in New York with no mezzanines and just an access point at each end of the platform, but it’s close and there’s a case for another access point in the middle; no full-length mezzanine is required either way. If the stations are any shorter, as on the numbered lines or in other North American cities, two escalators and a wide staircase at the end of each platform are more than enough, and yet the extensive overage is common in those smaller systems too (for example, in Vancouver, the Broadway extension is planned with 128 m long digs for 75 m trains, per p. 9 here).
“Fire safety” is used as an excuse by people with neither engineering background nor respect for anything quantitative or technical. Lieber is such a person: his background is in law and he seems incurious about technical issues (and this is also true of his successor at MTA Capital Construction, public policy grad Jamie Torres-Springer).
Perhaps due to this lazy incuriosity, Lieber didn’t notice that the MTA has extensive influence on the text of NFPA 130, bringing us to the second reason his claim is fraudulent. NFPA 130 is not to blame – again, it’s the same code as in a number of low- and medium-cost countries – but Nilo Cobau explains that the NFPA process is such that big agencies have considerable input, since there aren’t many places in the US that build subways. Nolan Hicks pointed out in the same thread, all linked in the lede paragraph, that the MTA has a voting member and two alternates on the board that determines NFPA 130 and hasn’t requested changes – and that Montreal, subject to the same codes, built a station with little overage (he says 160 m digs for 150 m platforms).
The handwaving of a fire code that isn’t even different from that of cheaper places is there for one purpose only: to deflect blame. It was a struggle to get Lieber and other New York leaders to even admit they have high costs, so now they try to make it the fault of anyone but themselves: fire safety regulations, organized labor, what have you.
Labor is a real issue, unlike fire safety, but it’s overblown by managers who look down on line workers and have generally never been line workers. Lieber graduated law school, was hired by USDOT at either junior-appointed or mid-level civil servant role, I can’t tell which, and then did managerial jobs; his successor as head of MTA Construction and Development, Jamie Torres-Springer, graduated public policy. These aren’t people who worked themselves up from doing engineering, architecture, planning, or ethnographic work; add the general hostility American white-collar workers have toward blue-collar workers, and soon people in that milieu come to believe that just because their top 5%er wages are much higher than they could earn anywhere else in the world, the sandhogs also earn much more than they could anywhere else in the world, when in truth New York sandhog and Stockholm miner wages and benefits are very close.
Occasionally the point that it’s not wages but labor productivity seeps in. There, at last, we see a real problem with labor. Eric and I found that about a third of the sandhogs on Second Avenue Subway didn’t really need to be there. Further cuts could be achieved through the use of more labor-efficient techniques, which the MTA is uninterested in implementing. The rest of the American labor premium comes from excessive staffing of white-collar supervisors, including representatives from each utility, which insists that the MTA pay for the privilege of having such representatives tell them what they can and cannot do in lieu of mapping the utilities and sending over the blueprints. All included, labor was around 50% of the cost of Second Avenue Subway, where the norm in Italy, Turkey, and Sweden is around 25% (note how higher-wage Sweden is the same as lower-wage Italy and much lower-wage Turkey); excessive labor costs contributed a factor of 1.5 premium to the project, but the other factor of 6 came from excessive station size, deep mining of stations (which thankfully will not happen at 106th and 116th Street; it will at 125th but that’s unavoidable), lack of system standardization, and a litany of project delivery problems that are generally getting worse with every iteration. Lieber personally takes credit for some of the privatization of planning to design-build consultancies, though to be fair to him, the project delivery problems predate him, he just made things slightly worse.
A New York that wants to build will not have incompetent political appointees in charge. It will instead hire professionals with a track record of success; as no such people exist within the American infrastructure construction milieu, it should use its own size and prestige to find someone from a low-cost city to hire, who will speak English with an accent and know more engineering than American legal hermeneutics. And it will not reward people who defraud the public about the state of regulations just because they’re too lazy to know better.
The MTA Sticks to Its Oversize Stations
In our construction costs report, we highlighted the vast size of the station digs for Second Avenue Subway Phase 1 as one of the primary reasons for the project’s extreme costs. The project’s three new stations cost about three times as much as they should have, even keeping all other issues equal: 96th Street’s dig is about three times as long as necessary based on the trains’ length, and 72nd and 86th Street’s are about twice as long but the stations were mined rather than built cut-and-cover, raising their costs to match that of 96th each. In most comparable cases we’ve found, including Paris, Istanbul, Rome, Stockholm, and (to some extent) Berlin, station digs are barely longer than the minimum necessary for the train platform.
MTA Construction and Development has chosen to keep building oversize stations for Second Avenue Subway Phase 2, a project that despite being for the most part easier than the already-open Phase 1, is projected to cost slightly more per kilometer. Nolan Hicks at the New York Post just published a profile diagram:
The enormous size of 125th Street Station is not going to be a grand civic space. As the diagram indicates, the length of the dig past the platforms will not be accessible to passengers. Instead, it will be used for staff and mechanical rooms. Each department wants its own dedicated space, and at no point has MTA leadership told them no.
Worse, this is the station that has to be mined, since it goes under the Lexington Avenue Line. A high-cost construction technique here is unavoidable, which means that the value of avoiding extra costs is higher than at a shallow cut-and-cover dig like those of 106th and 116th Streets. Hence, the $1 billion hard cost of a single station. This is an understandable cost for a commuter rail station mined under a city center, with four tracks and long trains; on a subway, even one with trains the length of those of the New York City Subway, it is not excusable.
When we researched the case report on Phase 1, one of the things we were told is that the reason for the large size of the stations is that within the MTA, New York City Transit is the prestige agency and gets to call the shots; Capital Construction, now Construction and Development, is smaller and lacks the power to tell NYCT no, and from NYCT’s perspective, giving each department its own break rooms is free money from outside. One of the potential solutions we considered was changing the organizational chart of the agency so that C&D would be grouped with general public works and infrastructure agencies and not with NYCT.
But now the head of the MTA is Janno Lieber, who came from C&D. He knows about our report. So does C&D head Jamie Torres-Springer. When one of Torres-Springer’s staffers said a year ago that of course Second Avenue Subway needs more circulation space than Citybanan in Stockholm, since it has higher ridership (in fact, in 2019 the ridership at each of the two Citybana stations, e.g. pp. 39 and 41, was higher than at each of the three Second Avenue Subway stations), the Stockholm reference wasn’t random. They no longer make that false claim. But they stick to the conclusion that is based on this and similar false claims – namely, that it’s normal to build underground urban rail stations with digs that are twice as long as the platform.
When I call for removing Lieber and Torres-Springer from their positions, publicly, and without a soft landing, this is what I mean. They waste money, and so far, they’ve been rewarded: Phase 2 has received a Full Funding Grant Agreement (FFGA) from the United States Department of Transportation, giving federal imprimatur to the transparently overly expensive design. When they retire, their successors will get to see that incompetence and multi-billion dollar waste is rewarded, and will aim to imitate that. If, in contrast, the governor does the right thing and replaces Lieber and Torres-Springer with people who are not incurious hacks – people who don’t come from the usual milieu of political appointments in the United States but have a track record of success (which, in construction, means not hiring someone from an English-speaking country) – then the message will be the exact opposite: do a good job or else.
Boston Meetup and Consultants Supervising Consultants
The meetup was a lot less formal than expected; people who showed up included loyal blog readers (thank you for reading and showing up!), social media followers (same), and some people involved in politics or the industry. I don’t have any presentation to show – I talked a bit about the TransitMatters Regional Rail program and then people asked questions. Rather, I want to talk about something I’ve said on social media but not here, which I delivered a long rant about to the last people who stayed there.
The issue at hand is that the only way that seems to work to deliver complex infrastructure projects is with close in-house supervision. This is true even in places where the public-sector supervisors, frankly, suck – which they frequently do in the United States. It’s fine to outsource some capabilities to consultants, but if it happens, then the supervision must remain in the public sector, which requires hiring more in-house people, at competitive salaries.
Why?
The reason is that public-sector projects always involve some public-sector elements. This is true even in the emergent norm in the English-speaking world and in many other countries that take cues from it, in which not only is most work done by consultants, but also the consultants are usually supervised by other consultants. The remains of the public sector think they’re committed to light-touch supervision, but because they, by their own admission, don’t know how to do things themselves or even how to supervise consultants, they do a bad job at it.
The most dreaded request is “study everything.” It’s so easy to just add more scenarios, more possibilities, more caveats. It’s the bane of collaborative documents (ask me how I know). In the Northeast Corridor timetabling project I’m doing with Devin Wilkins, I could study everything and look at every possible scenario, with respect to electrification, which projects are undertaken, rolling stock performance profile, and so on. It would not be doable with just me and her in a year or so; I would need to hire a larger team and take several years, and probably break it down so that one person just does Boston, another just does Philadelphia, a third just does Washington and Baltimore, several do New York (by far the hardest case), and one (or more) assists me in stapling everything together. The result might be better than what we’re doing now, thanks to the greater detail; or it might be worse, due to slight inconsistencies between different people’s workflows, in which case a dedicated office manager would be needed to sort this out, at additional expense. But at least I’d study everything.
Because I’m doing this project for Marron and not for an American public-sector client, I can prune the search tree, and do it at relatively reasonable expense. That’s partly because I’m the lead, but also partly because I know what I’m doing, to an extent, and am not going to tell anyone “study everything” and then dismiss most scenarios after three months of no contact.
The behavior I’m contrasting myself with is, unfortunately, rife in the American public sector. And it’s the most common among exactly the set of very senior bureaucrats, often (not always) ones who are there by virtue of political appointment rather than the civil service process, who swear that consultants do things better than the public sector. There’s no real supervision, and no real narrowing of the process. This looks like an alternative to micromanagement, but is not, because the client at the end does say “no, not like this”; there’s a reason the consultants always feel the need to study everything rather than picking just a few alternatives and hoping the client trusts them to do it right.
It’s telling that the consultants and contractors we speak to don’t really seem happy with how they’re treated by the public-sector client in those situations. They’re happy when interfacing with other private actors, usually. I imagine that if I hired a larger team (which we don’t have the budget for) and gave each person a separate task, they’d be really happy to have come up with all those different scenarios for how to run trains in the Baltimore-Washington area, interfacing with other equally dedicated people doing other tasks of this size. When consultants are supervised by other consultants, only the top-level consultant interfaces with the remains of the civil service, hollowed out by hiring freezes, uncompetitive salaries, and political scourging; the others don’t and think things work really smoothly. This, I think, is why opaque design-build setups are so popular with the private consultants who are involved in them: by the time a country or region fully privatizes its supervision to a design-build consultant, its public sector has been hollowed so much that the consultants prefer to be supervised privately, even if the results are worse.
In contrast, the only way forward is a bigger civil service. This means hiring more people, in-house, and paying them on a par with what they would be earning in the private sector given their experience. As I said at the bar a few hours ago, I’m imagining someone whose CV is four years at the MTA, then five at a consultant, then four at the MBTA, and then six at a consultant; with these 19 years of experience, they could get hired at a senior engineer or project manager position, for which the market rate in Boston as I understand is in the high $100,000s. For some things, like commuter rail electrification, there are unlikely to be any suitable candidates from within the US, and so agencies would have to hire a European or Asian engineer.
With competitive salaries, people would move between different employers in the same industry, as is normal in American and European industries. They could move between public and private employers, because the wages and benefits should be similar. They’d pick up experience. An agency like the MBTA, with its five to six in-house design review engineers, could staff up appropriately to be able to supervise not just small projects like infill commuter rail station, which it built at reasonable cost on the Fairmount Line, but also large ones like the Green Line Extension and South Coast Rail, which it builds at outrageously high costs.
The MTA 20 Year Needs Assessment Reminds Us They Can’t Build
The much-anticipated 20 Year Needs Assessment was released 2.5 days ago. It’s embarrassingly bad, and the reason is that the MTA can’t build, and is run by people who even by Northeastern US standards – not just other metro areas but also New Jersey – can’t build and propose reforms that make it even harder to build.
I see people discuss the slate of expansion projects in the assessment – things like Empire Connection restoration, a subway under Utica, extensions of Second Avenue Subway, and various infill stations. On the surface of it, the list of expansion projects is decent; there are quibbles, but in theory it’s not a bad list. But in practice, it’s not intended seriously. The best way to describe this list is if the average poster on a crayon forum got free reins to design something on the fly and then an NGO with a large budget made it into a glossy presentation. The costs are insane, for example $2.5 billion for an elevated extension of the 3 to Spring Creek of about 1.5 km (good idea, horrific cost), and $15.9 billion for a 6.8 km Utica subway (see maps here); this is in 2027 dollars, but the inescapable conclusion here is that the MTA thinks that to build an elevated extension in East New York should cost almost as much as it did to build a subway in Manhattan, where it used the density and complexity of the terrain as an argument for why things cost as much as they did.
To make sure people don’t say “well, $16 billion is a lot but Utica is worth it,” the report also lowballs the benefits in some places. Utica is presented as having three alternatives: subway, BRT, and subway part of the way and BRT the rest of the way; the subway alternative has the lowest projected ridership of the three, estimated at 55,600 riders/weekday, not many more than ride the bus today, and fewer than ride the combination of all three buses in the area today (B46 on Utica, B44 on Nostrand, B41 on Flatbush). For comparison, where the M15 on First and Second Avenues had about 50,000 weekday trips before Second Avenue Subway opened, the two-way ridership at the three new stations plus the increase in ridership at 63rd Street was 160,000 on the eve of corona, and that’s over just a quarter of the route; the projection for the phase that opened is 200,000 (and is likely to be achieved if the system gets back to pre-corona ridership), and that for the entire route from Harlem to Lower Manhattan is 560,000. On a more reasonable estimate, based on bus ridership and gains from faster speeds and saving the subway transfer, Utica should get around twice the ridership of the buses and so should Nostrand (not included in the plan), on the order of 150,000 and 100,000 respectively.
Nothing there is truly designed to optimize how to improve in a place that can’t build. London can’t build either, even if its costs are a fraction of New York’s (which fraction seems to be falling since New York’s costs seem to be rising faster); to compensate, TfL has run some very good operations, squeezing 36 trains per hour out of some of its lines, and making plans to invest in signaling and route design to allow similar throughput levels on other lines. The 20 Year Needs Assessment mentions signaling, but doesn’t at all promise any higher throughput, and instead talks about state of good repair: if it fails to improve throughput much, there’s no paper trail that they ever promised more than mid-20s trains per hour; the L’s Communications-Based Train Control (CBTC) signals permit 26 tph in theory but electrical capacity limits the line to 20, and the 7 still runs about 24 peak tph. London reacted to its inability to build by, in effect, operating so well that each line can do the work of 1.5 lines in New York; New York has little interest.
The things in there that the MTA does intend to build are slow in ways that cross the line from an embarrassment to an atrocity. There’s an ongoing investment plan in elevator accessibility on the subway. The assessment trumpets that “90% of ridership” will be at accessible stations in 2045, and 95% of stations (not weighted by ridership) will be accessible by 2055. Berlin has a two years older subway network than New York; here, 146 out of 175 stations have an elevator or ramp, for which the media has attacked the agency for its slow rollout of systemwide accessibility, after promises to retrofit the entire system by about this year were dashed.
The sheer hate of disabled people that drips from every MTA document about its accessibility installation is, frankly, disgusting, and makes a mockery of accessibility laws. Berlin has made stations accessible for about 2 million € apiece, and in Madrid the cost is about 10 million € (Madrid usually builds much more cheaply than Berlin, but first of all its side platforms and fare barriers mean it needs more elevators than Berlin, and second it builds more elevators than the minimum because at its low costs it can afford to do so). In New York, the costs nowadays start at $50 million and go up from there; the average for the current slate of stations is around $70 million.
And the reason for this inability to build is decisions made by current MTA leadership, on an ongoing basis. The norm in low- and medium-cost countries is that designs are made in-house, or by consultants who are directly supervised by in-house civil service engineers who have sufficient team size to make decisions. In New York, as in the rest of the US, the norms is that not only is design done with consultants, but also the consultants are supervised by another layer of consultants. The generalist leadership at the MTA doesn’t know enough to supervise them: the civil service is small and constantly bullied by the political appointees, and the political appointees have no background in planning or engineering and have little respect for experts who do. Thus, they tell the consultants “study everything” and give no guidance; the consultants dutifully study literally everything and can’t use their own expertise for how to prune the search tree, leading to very high design costs.
Procurement, likewise, is done on the principle that the MTA civil service can’t do anything. Thus, the political appointees build more and more layers of intermediaries. MTA head Janno Lieber takes credit for the design-build law from 2019, in which it’s legalized (and in some cases mandated) to have some merger of design and construction, but now there’s impetus to merge even more, in what is called progressive design-build (in short: New York’s definition of design-build is similar to what is used in Turkey and what we call des-bid-ign-build in our report – two contracts, but the design contract is incomplete and the build contract includes completing the design; progressive design-build means doing a single contract). Low- and medium-cost countries don’t do any of this, with the exception of Nordic examples, which have seen a sharp rise in costs from low to medium in conjunction with doing this.
And MTA leadership likes this. So do the contractors, since the civil service in New York is so enfeebled – scourged by the likes of Lieber, denied any flexibility to make decisions – that it can’t properly supervise design-bid-build projects (and still the transition to design-build is raising costs a bit). Layers of consultants, insulated from public scrutiny over why exactly the MTA can’t make its stations accessible or extend the subway, are exactly what incompetent political appointees (but I repeat myself) want.
Hence, the assessment. Other than the repulsively slow timeline on accessibility, this is not intended to be built. It’s not even intended as a “what if.” It’s barely even speculation. It’s kayfabe. It’s mimicry of a real plan. It’s a list of things that everyone agrees should be there plus a few things some planners wanted, mostly solidly, complete with numbers that say “oh well, we can’t, let’s move on.” And this will not end while current leadership stays there. They can’t build, and they don’t want to be able to build; this is the result.
High Speed 2 is (Partly) Canceled Due to High Costs
It’s not yet officially confirmed, but Prime Minister Rishi Sunak will formally announce that High Speed 2 will be paused north of Birmingham. All media reporting on this issue – BBC, Reuters, Sky, Telegraph – centers the issue of costs; the Telegraph just ran an op-ed supporting the curtailment on grounds of fiscal prudence.
I can’t tell you how the costs compare with the benefits, but the costs, as compared with other costs, really are extremely high. The Telegraph op-ed has a graph with how real costs have risen over time (other media reporting conflates cost overruns with inflation), which pegs current costs, with the leg to Manchester still in there, as ranging from about £85 billion to £112 billion in 2022 prices, for a full network of (I believe) 530 km. In PPP terms, this is $230-310 million/km, which is typical of subways in low-to-medium-cost countries (and somewhat less than half as much as a London Undeground extension). The total cost in 2022 terms of all high-speed lines opened to date in France and Germany combined is about the same as the low end of the range for High Speed 2.
I bring this up not to complain about high costs – I’ve done this in Britain many times – but to point out that costs matter. The ability of a country or city to build useful infrastructure really does depend on cost, and allowing costs to explode in order to buy off specific constituencies, out of poor engineering, or out of indifference to good project delivery practices means less stuff can be built.
Britain, unfortunately, has done all three. High Speed 2 is full of scope creep designed to buy off groups – namely, there is a lot of gratuious tunneling in the London-Birmingham first phase, the one that isn’t being scrapped. The terrain is flat by French or German standards, but the people living in the rural areas northwest of London are wealthy and NIMBY and complained and so they got their tunnels, which at this point are so advanced in construction that it’s not possible to descope them.
Then there are questionable engineering decisions, like the truly massive urban stations. The line was planned with a massive addition to Euston Station, which has since been descoped (I blogged it when it was still uncertain, but it was later confirmed); the current plan seems to be to dump passengers at Old Oak Common, at an Elizabeth line station somewhat outside Central London. It’s possible to connect to Euston with some very good operational discipline, but that requires imitating some specific Shinkansen operations that aren’t used anywhere in Europe, because the surplus of tracks at the Parisian terminals is so great it’s not needed there, and nowhere else in Europe is there such high single-city ridership.
And then there is poor project delivery, and here, the Tories themselves are partly to blame. They love the privatization of the state to massive consultancies. As I keep saying about the history of London Underground construction costs, the history doesn’t prove in any way that it’s Margaret Thatcher’s fault, but it sure is consistent with that hypothesis – costs were rising even before she came to power, but the real explosion happened between the 1970s (with the opening of the Jubilee line at 2022 PPP $172 million/km) and the 1990s (with the opening of the Jubilee line extension at $570 million/km).
Our Webinar, and Penn Reconstruction
Our webinar about the train station 3D model went off successfully. I was on video for a little more than two hours, Michael a little less; the recording is on YouTube, and I can upload the auto-captioning if people are okay with some truly bad subtitles.
I might even do more webinars as a substitute for Twitch streams, just because Zoom samples video at similar quality to Twitch for my purposes but at far smaller file size; every time I upload a Zoom video I’m reminded that it takes half an hour to upload a two-hour video whereas on Twitch it is two hours when I’m in Germany. (Internet service in other countries I visit is much better.)
The questions, as expected, were mostly not about the 3D model, but about through-running and Penn Station in general. Joe Clift was asking a bunch of questions about the Hudson Tunnel Project (HTP) and its own issues, and he and others were asking about commuter rail frequency. A lot of what we talked about is a preview of a long proposal, currently 19,000, by the Effective Transit Alliance; the short version can be found here. For example, I briefly mentioned on video that Penn Expansion, the plan to demolish a Manhattan block south of Penn Station to add more tracks at a cost of $17 billion, provides no benefits whatsoever, even if it doesn’t incorporate through-running. The explanation is that the required capacity can be accommodated on four to five tracks with best American practices for train turnaround times and with average non-US practices, 10 minutes to turn; the LIRR and New Jersey Transit think they need 18-22 minutes.
There weren’t questions about Penn Reconstruction, the separate (and much better) $7 billion plan to rebuild the station in place. The plan is not bad – it includes extra staircases and escalators, extra space on the lower concourse, and extra exits. But Reinvent Albany just found an agreement between the various users of Penn Station for how to do Penn Reconstruction, and it enshrines some really bad practices: heavy use of consultants, and a choice of one of four project delivery methods all of which involve privatization of the state; state-built construction is not on the menu.
In light of that, it may make sense to delay Penn Reconstruction. The plan as it is locks in bad procurement practices, which mean the costs are necessarily going to be a multiple of what they could be. It’s better to expand in-house construction capacity for the HTP and then deploy it for other projects as the agency gains expertise; France is doing this with Grand Paris Express, using its delivery vehicle Société du Grand Paris as the agency for building RER systems in secondary French cities, rather than letting the accumulated state capacity dissipate when Grand Paris Express is done.
This is separate from the issue of what to even do about Penn Station – Reconstruction in effect snipes all the reimaginings, not just ours but also ones that got more established traction like Vishaan Chakrabarti’s. But even then it’s not necessarily a bad project; it just really isn’t worth $7 billion, and the agreement makes it clear that it is possible to do better if the agencies in question learn what good procurement practices are (which I doubt – the MTA is very bought in to design-build failure).
Mineta Shows How not to Reduce Construction Costs
There’s a short proposal just released by Joshua Schank and Emma Huang at the Mineta Transportation Institute, talking about construction costs. It’s anchored in the experience of Los Angeles more than anything, and is a good example of what not to do. The connections the authors have with LA Metro make me less confident that Los Angeles is serious about reforming in order to be able to build cost-effective infrastructure. There are three points made in the proposal, of which two would make things worse and one would be at best neutral.
What’s in the proposal?
The report links to the various studies done about construction cost comparison, including ours but also Eno’s and Berkeley Law’s. It does so briefly, and then says,
Often overlooked are the inefficiencies and shortcomings inherent in the transportation planning process, which extend far beyond cost, to the quality of the projects, outcomes for the public, and benefits to the region. Rather than propose sweeping, but politically unfeasible, policy changes to address these issues, we focused on more attainable steps that agencies can take right now to improve the process and get to better outcomes.
Mineta’s more attainable steps, in lieu of what we say about project delivery and standardization, are threefold:
- Promise Outcomes, not Projects: instead of promising a concrete piece of infrastructure like a subway, agencies should promise abstract things: “mode-agnostic mobility solutions that ‘carried x riders per day’ or ‘reduced emissions by x%’ or ‘reduced travel time by x minutes,'” which may be “exclusive bus lanes, express bus services, or microtransit.”
- Separate the Planning and Environmental Processes: American agencies today treat the environmental impact statement (EIS) process as the locus of planning, and instead should separate the two out. The planning process should come first; one positive example is the privatized planning of the Sepulveda corridor in Los Angeles.
- Integrate Planning, Construction, and Operations Up Front: different groups handling operations and construction are siloed in the US today, and this should change. There are different ways to do it, but the report spends the longest time on a proposal to offload more responsibilities to public-private partnerships (PPPs or P3s), which should be given long-term contracts for both construction and maintenance.
Point #2 is not really meaningful either way, and the Sepulveda corridor planning is not at all a good example to learn from. The other two points have been to various extents been done before, always with negative consequences.
What’s the problem with the proposal?
Focusing on outcomes rather than projects is called functional procurement in the Nordic countries. The idea is that the state should not be telling contractors what to do, but only set broad goals, like “we need 15,000 passengers per hour capacity.” It’s a recent reform, along many others aiming to increase the role of the private sector in planning.
In truth, public transport is a complex enough system that it’s not enough to say “we need X capacity” or “we need Y speed.” Railways have far too many moving parts, to the point that there’s no alternative to just procuring a system. Too many other factors depend on whether it is a full metro, a tramway, a tram-train (in practice how American light rail systems function), a subway-surface line, or a commuter train. In practice, functional procurement in Sweden hasn’t brought in any change.
In the case of Sepulveda, LA Metro did send some of the high-level P3 proposals to Eric and me. What struck me was that the vendors were proposing completely different technologies. This is irresponsible planning: Sepulveda has a lot of different options for what to do to the north (on the San Fernando Valley side) and south (past LAX), and not all of them work with new technology. For example, one option must be running it through to the Green Line on the 105, but this is only viable if it’s the same light rail technology.
The alternative of microtransit is even worse. It does not work at scale; over a decade of promises by taxi companies that act like tech companies have failed to reduce the cost structure below that of traditional taxis. However, it does open the door for politicians who think they’re being innovative to bring in inefficient non-solutions that are getting a lot of hype. The report brings the example of a New York politician who was taking credit for (small) increases in subway frequency; well, many more politicians spent the 2010s saying that San Francisco’s biggest nonprofit, Uber, was the future of transportation.
The point recommending P3s for their integration of operations and infrastructure is even worse. The privatization of state planning has been an ongoing process in certain parts of the world – it’s universal in the English-speaking world and advancing in the Nordic countries. The outcomes are always the same: infrastructure construction gets worse.
The top-down Swedish state planning of the third quarter of the 20th century built around 104 km of the T-bana, of which 57 are underground, for $3.6 billion in 2022 prices. The present process, negotiated over decades with people who don’t like an obtrusive state and are inspired by British privatization, is building about 19 underground km, for $4.5 billion. This mirrors real increases in absolute costs (not just overruns) throughout Scandinavia. The costs of Sweden in the 1940s-70s were atypically low, but there’s no need for them to have risen so much since then; German costs have been fairly flat over this period, Italian costs rose to the 1970s-80s due to corruption and have since fallen, Spanish costs are still very low.
As we note in the Swedish case report, Nordic planners take it for granted that privatization is good, and ding Germany for not doing as much of it as the UK; of these two countries, one can build and one can’t, and the one that can is unfortunately not the one getting accolades. The United Kingdom, was building subways for the same costs as Germany and Italy in the 1960s and 70s, but its real costs have since grown by a factor of almost four. I can’t say for certain that it’s about Britain’s love affair with P3s, but the fact that the places that use P3s the most are the worst at building infrastructure should make people more critical of the process.
Pedestrian Observations 