The Union Tunnel is a railroad tunnel on Amtrak's Northeast Corridor in Baltimore, Maryland adjacent to Pennsylvania Station that was built to connect...

The Baltimore and Potomac Tunnel (or B&P Tunnel) is a double-tracked, masonry arch railroad tunnel on the Northeast Corridor in Baltimore, Maryland, just...

the south through the two-track, 7,660-foot (2,334.77-meter) Baltimore and Potomac Tunnel, which opened in 1873 and whose 30 mph (48 km/h) speed limit...

approach is the 1873 Union Tunnel, which has one single-track bore and one double-track bore. Just outside the city, Baltimore/Washington International...

rail tunnels, Amtrak (formerly Pennsylvania Railroad), Baltimore Gilmor Street Tunnel Wilson Street Tunnel John Street Tunnel Baltimore Harbor Tunnel, twin...

The Boring Company (TBC) is an American infrastructure, tunnel construction services, and equipment company founded by Elon Musk. TBC was founded as a...

train service. The Baltimore and Potomac Tunnel, bored under north Baltimore in 1871-73 remains in use, for now. The Virginia Avenue Tunnel built in Southeast...

Union Square is a neighborhood located in the Sowebo area of Baltimore. It dates to the 1830s and includes a historic district of houses and commerce buildings...

century; others included the Pittsburgh & Lake Erie Railroad Station, the Baltimore and Ohio Station, and Wabash Pittsburgh Terminal, and it is the only surviving...

the construction of the Union Depot (Union Station) to representatives of the District of Columbia. They proposed to build tunnels under the tracks for K...