RoyBoy posted:PRRTrainguy posted:the original electrification for Penn station was 3rd rail. when the prr decided to do mainline electrification with overhead catenary (11.000 v ac) they lowered the tracks in the tunnels, which allowed catenary, but very close clearances. there is no room to lower the tracks further.
mikeg
That is interesting. Why is there no room to lower the tracks further? Is there a subway or some other tunnel below the ground?
I believe it has more to do with the material well below the base bed of the Hudson River.