SFMTA’s Cable Car Signal Tower Gets a Refresh By Jeremy Menzies At the corner of California and Powell Streets stands a diminutive but important building that has been in use for well over 100 years. This octagonal signal tower controls the crossing of the Powell and California Street cable car lines, and recently underwent a full restoration thanks to the skilled craftspeople at the Cable Car Division. A group photo of Muni craftspeople and shop management who worked to restore the signal tower in 2020-2021. The tower’s history dates to 1888 when the original was built by the Ferries and Cliff House Railroad, which operated cable cars on Powell Street at the time. That tower was destroyed in the 1906 earthquake and fires that ravaged Nob Hill. In March 1907, it was rebuilt by then-owner United Railroads of San Francisco (URR) and went back into operation. Photo showing signal tower in 1908 with the Fairmont Hotel and passengers waiting for a cable car in the background. Photo c...