Many, if not most, NYC subway stations require major construction work to make them accessible: either building a new standalone elevator structure (or 2) to access an elevated platform, or new excavations thru hundreds of years worth, often unmapped, utility lines and tunnels to install 2, 3, or more elevators.Don’t see it that way. The MTA Subway has a small fraction of ADA compliant stations while Amtrak is mostly all ADA compliant in a lot more total stations around the USA with projects already in the works. Its not even close. I don’t believe all stations should be ADA compliant as long as there are other nearby accessible stations and alternative transportation methods available. Amtrak is in good shape.
Most Amtrak stations are at grade. All that's required to make the trains accessible is a concrete platform and a portable lift. It may not even need to be a full-length platform, just long enough to spot the cars as needed. That doesn't address the restrooms and ticket office, but it's a good enough interim solution.
Apples to oranges.