Location: Detroit, MI - Gratiot Avenue (MC/DSR)
This is the grade crossing of the Detroit Street Railway Gratiot Avenue line and the Michigan Central Belt Line on the near east side of the City of Detroit.
Location: 42o22.077'N / 83o01.328'W.
1923. The MPSC allows changes to the interlocker here. It will be changed from semaphores to color light signals, and derails will be eliminated, allowing for control pipes to control signals. [MPSC-1923]