Geary Subway

San Francisco Municipal Railway bus routes on the street served 52,900 daily riders in 2019, the most of any corridor in the city.

[8] As a precursor to full Bay Area Rapid Transit (BART) planning, a Geary Subway was once again studied in 1960 as the connection into Marin County.

The tunnel was expected to run from Market and Montgomery to Park Presidio Boulevard before turning north to California Street in anticipation of an extension to Marin.

The study called for a subway-surface rail line along Geary, running on the surface as far east as Laguna Street and underground to either the Financial District or South of Market.

[11] When the tax was extended in the early 2000s, the project was changed to focus on implementing bus rapid transit features along the corridor.

[12][13] In 1995, the San Francisco Municipal Railway hired Merrill & Associates to study the possibility of building a new BART subway beneath Geary in conjunction with adding light rail on the surface.

These plans were dropped, according to former Senator Quentin L. Kopp, due to merchant and resident opposition, citing potential blight similar to that caused by Market Street subway construction two decades earlier.