Repairs to a sinkhole that formed in The City’s Yerba Buena neighborhood began Wednesday morning.
A 12-foot by 5-foot section of Mission Street collapsed between New Montgomery and Second streets around 5:30 p.m. Tuesday. The hole is roughly nine feet deep, and a broken sewer main was found at the bottom.
The cause of the sewer break is not yet known, but “age is likely a factor,” according to the San Francisco Public Utilities Commission. That segment of the sewer line is made of brick, and dates back to 1875.
The site was secure Tuesday night, but Mission Street will remain closed between New Montgomery and Second streets through Wednesday. San Francisco Municipal Railway lines 14 and 14R were being rerouted.
Officers with the San Francisco Police Department were reportedly first on scene Tuesday evening. The front end of a vehicle was caught in the sinkhole, officers helped occupants get to safety before the vehicle was towed out.