List of Northeast Corridor infrastructure

This is a list of major infrastructure on the Northeast Corridor, a rail line running through the northeast United States. The list includes major interlockings, bridges, tunnels, and past and present stations, including MBTA Orange Line and WMATA Orange Line stations on separate tracks but sharing the right-of-way. It is intended as a companion to the list of stations in the main article.

Amtrak lines: AE=Acela Express, AD=Adirondack, CD=Cardinal, CL=Carolinian, CPL=Capitol Limited, CS=Crescent, EAE=Ethan Allen Express, ES=Empire Service, KS=Keystone, LS=Lake Shore Limited, ML=Maple Leaf, NR=Northeast Regional, PA=Pennsylvanian, PL=Palmetto, SM=Silver Meteor, SS=Silver Star, VT=Vermonter (note that not all trains of that designation necessarily stop at all marked stations)
MARC: Served by MARC Penn Line trains.
MBTA: Served by MBTA
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