Route 23 began its service as an electrified rail and streetcar line between Middle River and downtown Baltimore in 1897 along much of the same route as today. The streetcar operated until 1942, until the line was converted into a rubber-tire bus service. During these years, Route 23 did not serve the west side of town at all.
Route 23 began as an electrified rail and streetcar line between Middle River and downtown Baltimore in 1897, following much of the same route as today's service. The streetcar operated until 1942 when it was converted into a rubber-tire bus service. Throughout these years, Route 23 did not serve the west side of town.