Weird & curiousHistoric
Mile Rock Tunnel
Mile Rock Tunnel is a utility tunnel in San Francisco, in the U.S. state of California that was originally constructed as the storm sewer outfall draining the Sunset, West Mission, Richmond, and Ingleside districts.
The tunnel travels from Cabrillo Street northward under 48th Ave to its outfall near Mile Rock Beach.
Why it's on the map
The Mile Rock Tunnel started construction in 1914 and was completed by 1915.
The contract was initially awarded to Edward Malley, but he stopped work after five months because of the high cost of insurance; R.C. Storrie and Company, who were responsible for other large tunneling projects including the Twin Peaks Tunnel, assumed responsibility for the work in January 1915.
Mile Rock Tunnel is a utility tunnel in San Francisco, in the U.S. state of California that was originally constructed as the storm sewer outfall draining the Sunset, West Mission, Richmond, and Ingleside districts.
Mayor 'Sunny Jim' Rolph and other officials, including City Engineer M.M. O'Shaughnessy performed an inspection of the completed tunnel using a car on August 26, 1915.
Source: Wikipedia / Wikidata
Nearby
Here Before Us