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Here's interesting tidbit: Vast majority of underground railway network in Moscow was built in 1950s. Cost of building a mile of interstate highway in US is abo

Here's interesting tidbit: Vast majority of underground railway network in Moscow was built in 1950s. Cost of building a mile of interstate highway in US is about $5M. Interestingly this cost hasn't changed since 1956 in inflation adjusted dollars when new 41,000 miles of interstate highway in US was laid out. It seems major cost is not tech but quite possibly regulation and/or government inefficiency/corruption.

wongarsu 7y ago
We have also use highways a lot more and accordingly require better construction. I'm not saying nothing interesting is going on, but construction+maintenance over 20 years, adjusted for vehicle miles traveled (or rather semi-truck-miles traveled) would be a much better indicator.