The Alexandria Branch trackage to Shepherd's Landing was heavily used during World War II when traffic congestion on the Long Bridge caused the U.S. Army Corps of Engineers to construct a bridge along the original plan of the B&O: Alexandria to Shepherd's Landing, Washington.
Alexandria sidelinjens spor til Shepherd's Landing blev brugt meget under 2. verdenskrig da trafikpropper på Long Bridge fik ingeniørkorpset til at bygge en bro langs den oprindelige B&O linje: Alexandria til Shepherd's Landing, Washington.