Quote:
Originally Posted by electricron
Is Amtrak building 4 single track tunnels or 2 single track tunnels that can be expanded later with more funding?  |
Just a 2 track tunnel initially (actually 2 single-track bores). It sounds like the existing B&P tunnel will remain in use for the occasional freight train, but with the passenger trains relocated I'm guessing the existing tunnel can be rehabbed up to modern codes at a reasonable cost in the future, for a full four tracks thru Baltimore. That, or the B&P tunnel will be reduced from two tracks down to one track, with the roof chiseled out to allow double stacks.
Usually single-track bores are preferred in urban areas - wider tunnels need to go deeper to avoid settlement on the surface, so that creates issues with grades.
There will also be a new West Baltimore station with full-length, high level platforms and handicap access.