https://pedestrianobservations.wordpress.com/2013/06/03/comp...
If only I thought of this - then I might have cited a Spanish construction project in the very comment you replied to, so that no one could cluelessly bring up labor costs.
In any case, even if your claim were true, there is an easy solution. Import Indians to get the job done. The goal is fixing our crumbling infrastructure rather than union featherbedding, right?
I'm going to see if I can google what a Swiss equivalent costs (pretty certain the Swiss should be more expensive than American workers).
Edit: the only metro in Switzerland is in Lausanne, and it cost SFr590 million ($472 million) for about 6 km (3.7 miles) and 14 stations.
Construction is probably much easier, but the American one still has some pretty brutal cost overruns.