The 141-year-old Baltimore and Potomac (B&P) Tunnel is a major bottleneck on the Northeast Corridor, but Amtrak, the Maryland Department of Transportation (MDOT) and Federal Railroad Administration (FRA) are conducting a study to examine alternatives to improve or replace the tunnel.  The two-track B&P Tunnel is used by Amtrak, Maryland’s MARC Commuter Rail trains and … Continue Reading