A large sinkhole caused by a broken sewer main is seen near Sacramento and Lyon streets in San Francisco, Calif. Friday, April 22, 2016. (Photo courtesy Reagan Hudgens)

A large sinkhole caused by a broken sewer main is seen near Sacramento and Lyon streets in San Francisco, Calif. Friday, April 22, 2016. (Photo courtesy Reagan Hudgens)

Crews repairing broken sewer main that caused sinkhole in Pacific Heights

Crews on Friday were working to repair a broken sewer main that caused a massive sinkhole in Pacific Heights.

A 17-foot by 22-foot area of Sacramento Street collapsed between Lyon and Baker streets around 5 p.m., which was caused by a sewer main break at the same location, according to the San Francisco Public Utilities Commission.

SFPUC sewer operations crews on Friday installed a temporary sewer main and refilled the hole with dirt to stabilize the area. Crews will remain on site through the evening.

Sacramento Street remained closed between Lyon and Baker streets on Friday.

Permanently restoring the sewer main is expected to be completed by Saturday, after which time crews will install temporary street paving and reopen the road late Saturday. A more permanent fix to the road is anticipated next week.

Water and sewer service to the area has not been affected, and residents are able to use their driveways.

The exact cause of the sewer main break has not been determined, though crews believe the pipe’s age may have been a contributing factor.

Bay City News Service contributed to this report.Pacific HeightsSFPUCsinkhole

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