The closure of the Twin Peaks Tunnel affects the K-Ingleside and M-Ocean View lines, which access the housing developments of West Portal, Forest Hill and Ingleside Terrace. The L-Taraval ...

Part of the sluggish the Twin Peaks Tunnel Replacement ... of Muni metro trains that use the tunnel, on the K-Ingleside, L-Taraval, and M-Ocean View routes,” reports SF Examiner.

The SFMTA has promised the $40 million project would lead to improved service on the K-Ingleside, L-Taraval and M-Ocean View light-rail lines, all of which use the tunnel to get from the Castro to the ...

Muni Metro riders beware: The Twin Peaks Tunnel is scheduled to be shut down for more than a week in August when the SF Municipal Transportation Agency conducts a major project to retrofit the 106 ...

Feb. 4, 1918: Thousands of San Franciscans celebrated the opening of the $4.25 million Twin Peaks streetcar tunnel. At the time, the 12,000-foot tunnel was the longest of its kind in the world.