I presume they meant to put in railway infrastructure.
Railways cost so much less than one highway, we could have a system basically from home to work.
(eg smol trams to a midway se station to high-speed trains)
You mean the huge underground train station & several miles of tunnels around if, with all the work preformed underneath an undisturbed city?
Yes, that is still waaay cheaper than constructing an underground highway of that magnitude/that area (+ an underground station you conveniently included in the estimate) .
I presume they meant to put in railway infrastructure.
Railways cost so much less than one highway, we could have a system basically from home to work.
(eg smol trams to a midway se station to high-speed trains)
Is that true in California? Caltrain is costing $5.15 billion per mile.
You mean the huge underground train station & several miles of tunnels around if, with all the work preformed underneath an undisturbed city?
Yes, that is still waaay cheaper than constructing an underground highway of that magnitude/that area (+ an underground station you conveniently included in the estimate) .
Or did you have something else in mind?
Why would you build the highway underground?
Same reasons as railway I suppose - its expensive to destroy a city centre to get the land needed for it.
But you started the comparison with the underground thing.