Earlier quoted context omitted.
> If you have enough density to support a bus lane, you have enough density to support a subway. Not at all. Building a subway in most US cities right now is very expensive. Raising the tax revenue alone is probably a non-starter. Moreover you're going to have to close the road down anyway to do any form of cut-and-cover or even deep bore construction, which means every business on the corridor and every person who l…
> Building a subway in most US cities right now is very expensive. This is true but seems like a problem worth solving. It's also true of more than subways; we have the same problem with bridges, housing and many other things. Better to get on with fixing it than use it as an excuse for doing something worse. > Moreover you're going to have to close the road down anyway That's a one-time cost, and you're not required…
IMO it comes back to the fact that Americans are just not willing to accept change of any kind right now. The economy feels too shaky, the electorate too divided (even within states and municipalities), and there's too little faith in government to architect the kind of change you'd need to build subways, underground metros, or even BRT. We need a larger feeling of unity even at a state level to make the changes necessary, which is why municipalities continue to do bare minimum maintenance of roadways and pretty much nothing else. The last big set of constriction in dense urban areas was funded by the Obama stimulus from the GFC which was passed 17 years ago.