Drivers were urged to avoid the area near the intersection of Valley Oaks Drive and Stone Valley Road in unincorporated Alamo Friday evening due to a sinkhole, Contra Costa County emergency officials said.
The officials announced the sinkhole on Twitter at 6:51 p.m. Friday.
Water service had been affected for residents of Valley Oaks Drive and surrounding streets and will not be restored until Saturday, officials said.
Work is being done to reopen one lane on Valley Oaks Drive at Stone Valley Road to allow drivers to get in and out of the area.
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Officials are also asking residents to not call 911 unless they have a life-threatening emergency.
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