A few months ago, there appeared an article comparing construction costs for subways in the US and Europe. It has a little table, not PPP adjusted, with cases from elsewhere, but the bulk of the reporting covers differences between the US and Europe. It’s interesting and I urge everyone to read it – but read it critically. It has a long list of bullet points naming various differences, some already covered here, some new but still within reason.
One aspect that seems especially apt is this:
The construction cost [in the US] represents slightly more than 50% of the overall program cost, while soft costs and stakeholders’ commitments at 45% are significantly higher in comparison with other types of major projects or similar projects in other global regions.
Labor cost and construction schedule are the most important factors affecting the construction cost. Labor cost is often driven by labor union rules which vary significantly among states and cities. One of the highest labor costs of tunnel construction workers is the Sandhogs in New York which can be as high as $110/hr and on an overtime basis, it can reach over two to three times this value. Their rates are higher than other tunnel workers in the country and significantly higher than European or Asian workers rates. Also, the number of workers assigned in the tunnel in New York is significantly more than other parts of the country and as much as 4 times more than tunnel workers assigned to comparable projects in Europe. Tunneling being linear structures, the opportunities to accelerate the construction schedule in order to reduce overall labor cost are limited.
That said, I’d like to caution about fully accepting everything the article says. The key issue is that the authors’ experience is as consultants – they work for AECOM. This means that to at least some extent, their expertise is informed by their work as outside consultants, which means that they are the most familiar with projects that at some point invite consultants in.
This is important, because this may be an important difference between low- and medium-cost countries. I am not sure – I’m trying to investigate those differences more carefully, but this involves listening to German complaints about NIMBYism and trying to figure out how relevant it is that NIMBYs are far less empowered in Southern Europe, counting Turkey as part of that region since it acts much like a peripheral European country in construction. I don’t think that low-cost countries in Southern Europe use international consultants – Milan and Madrid at least don’t, and Istanbul used Italian consultants at one point but nowadays seems mostly to design things itself.
What’s more, AECOM’s experience is not just in countries that use AECOM’s advice regularly, but also in specific projects that bought its services. This is relevant to the claim that,
European owners spend less time and money on planning, studies, conceptual developments, and detailed design. Most projects are implemented using the Design-Build model with the detailed design provided by the contractor during construction to suit his means and methods; this results in efficiency and eliminates repeating of design work.
There’s the rub: design-build does exist in Continental Europe. Turkey uses it, and France is glancing in that direction. But it’s uncommon – Italy and Spain do not use this method, and France largely does not either and I think neither do Germany or the Nordic countries. Moreover, design-build in Turkey means there is extensive in-house oversight, much more so than in American or British design-build projects.
French design-build is even more tightly overseen, because its purpose is not to forgo public planning. Rather, France traditionally maintains the separation of public planning, private design, and private construction, in order to fight corruption and guarantee fair procurement. This separation leads to problems when projects require redesign in case they are very complex, and as a result, Grand Paris Express exists as a large public-sector planning agency to facilitate coordination between the design and construction teams. Technically this can be called design-build, but it has approximately nothing to do with American design-build projects that pay Skanska or Dragados a large sum of money to dig a subway and have extensive public regulations and red tape but little public engineering. The role of the public sector in American, British, and increasingly rest-of-Anglosphere eyes is to make sure companies follow capricious rules but not to actively build infrastructure or, perhaps, change the rules to be more favorable to swift action.
Regrettably, in the coda the authors buy into this mentality that the public sector cannot change the rules. They list various action items that can be undertaken to reduce costs, all of which are very good – those items include streamlining regulations, improving risk sharing mechanisms, and offloading some peripheral costs, among others, rather than expanding design-build. They’re missing a few things that we’re learning from the low-cost world – for example, Istanbul makes an effort to site stations in parks in order to be able to build them more easily and reduce their costs, which I believe is also true of Milan. But for the most part, the list of things that the US needs to do to have what France and Germany have cannot be too dissimilar to that produced by the authors.
But then the authors throw it all away and say it’s unlikely that the US could match European costs. They give a bare-bones explanation that boils down to saying “these recommendations won’t really be implemented.” I agree to some extent – it’s plausible, though not yet certain, that New York will need to union-bust the sandhogs and probably also the other trades, and these are politically powerful unions that know very well that they earn several times what their labor is worth and fight to preserve this. But, first of all, not every recommendation is that fraught; questions of risk sharing, public planning, and procurement do not lend themselves to political populism and remain unreformed mostly because the Northeastern US has timid, reactive governance.
And second, the authors say it’s unlikely the US could match European costs even if their recommendations are followed. They don’t explain why – there are few intangibles in the article, and they mostly seem peripheral to the main question, for example the fact that the US is an auto-oriented society. I can’t tell if it’s just uncertainty, which does not appear in the body of the piece, or if there’s more to it. It could just be a writing artifact and what they meant to say was that their recommendations could help New York match Parisian costs but they’re skeptical their recommendations are politically palatable to New York.
I emphasize the criticism, even though it’s generally a good overview, because all of the experts we talk to have biases. These could be consultant biases, or political biases (Turkey is far more polarized than any mature democracy), or engineering biases, or language biases. Even reading my blog is to some extent a bias – people who read me and think well of my analysis might well look for reasons in their own domain why design-build is bad, which means that to be certain I am correct in my prescription against it, we need to cleanroom this, for example by interviewing people who do not know me directly (or at all) and asking how engineering is done where they are.