100-year-old Twin Peaks Tunnel to close for 2 months to undergo $40M in repairs

SAN FRANCISCO - Muni riders, heads up.

San Francisco’s Twin Peaks Tunnel is closing for some major repairs. The tunnel will stay closed for two months. 

VIDEO: Twin Peaks closure ride guide

The SFMTA has posted signs around the neighborhood alerting riders and the public about the closure and offering information about other ways to get around. 

Here’s what riders need to know: 

The West Portal and Forest Hill stations will be closed during the repairs.

This closure impacts Muni metro lines K, L and M.

Instead of trains, there is bus service that will shuttle passengers to other stations. 

Passengers can transfer to underground stations at Church or Castro.
Muni customers transferring from M buses or K trains can get a free single ride BART ticket at the Balboa Park station to travel downtown. 

This $40 million dollar project will include some major improvements to the tracks, the drainage system and some seismic reinforcement.

The Twin Peaks Tunnel first opened 100 years ago.