Ambassador (B&O train) Ambassador (B&O train) The Ambassador was a named train of the Baltimore and Ohio Railroad (B&O) on its route between Baltimore, Maryland and Detroit, Michigan with major station stops in Washington, D.C. and Pittsburgh, Pennsylvania and Toledo, Ohio. Inaugurated in 1930, the "Ambassador" was discontinued in 1964. The B&O began passenger service from Detroit to Washington, D.C. in 1920. Until 1925, the B&O offered a through Washington - Detroit Pullman sleeping car running on a Washington-Chicago train to Deshler, Ohio then added to a Cincinnati - Detroit train. In June 1925, the B&O started a through overnight Washington - Detroit
B&O Railroad Bridge and Baltimore Railroad. The winner, the rival Pennsylvania Railroad, gave the B&O until 1884 to build its own southwest line into the city before cutting off access. The new route required a new bridge over the Schuylkill to replace the use of the PW&B's Gray's Ferry Bridge, and so the B&O built a four-span iron through truss bridge with a center swing span to allow boats to pass. It opened on July 11, 1886. (The cost of building the new route, especially the Howard Street Tunnel on the connecting Baltimore Belt Line, led to the B&O's first bankruptcy.) In 1910,