National Railroad Passenger Corporation

The Existing Baltimore Potomac (B P) Tunnel, Located Beneath West Baltimore, Dates From the Civil War Era. at Over 150 Years Old, It Is the Oldest Tunnel Along This Section of the Nec. Because of Ever Increasing Tunnel Maintenance Issues and Existing Geometric Speed Restrictions the B P Tunnel Is an Increasing Bottleneck for Operations of Maryland Area Rail Commuter (MARC) and Amtrak Passenger Trains Along the Corridor.phase I of the Program Will Design and Construct a New Tunnel for Passenger Rail, Replacing the B P Tunnel, and Modernize, Transform and Create a New Nec Alignment. the New Nec Alignment Will Include the Construction Of:two New High-capacity Tunnel Tubes That Will Primarily Serve Electrified Passenger Trains.new Roadway and Railroad Bridges.new Rail Systems, Track and Railroad Infrastructure.ventilation Facilities for Security, Life Safety, and Fire Suppression.a New Americans With Disabilities Act (ada)-accessible West Baltimore Marc Station.reconfiguration of Interlockings.the New Tunnelnamed for Frederick Douglasswill Be Used for Intercity Passenger and Commuter Rail Along Amtraks Nec, Supporting Speeds of Up to 110 MPH.