[1] On October 21, 1928, the San Francisco Municipal Railway (Muni) N Judah streetcar line opened.

It ran on Duboce Avenue between Market Street and the Sunset Tunnel, and shared track and overhead wires with the 22 for one block.

[2] N Judah trains began using the new portal on weekdays on February 18, 1980 – the first Muni Metro service.

[3] On December 17, 1980, the K, L, and M lines began Muni Metro service (and ceased using the diversion route) on weekdays.

[5] Accessible sections of high-level platforms were later built east of Church Street, near the entrance to the portal.

[8] J Church rail service resumed on December 19, 2020, with both new mini-high platforms in use and Duboce as the new terminus.