Bay Area highways and roads still closed Sunday due to storm damage

The atmospheric river pummeling the Bay Area is causing widespread flooding and even mudslides throughout the region. Residents are being encouraged to limit travel and check road closures before heading out, if they must drive. The National Weather Service issued a flood advisory that is in effect until 11:45 am Saturday. This a developing story and will be updated with road closures:

LATEST Jan. 1, 8:45 am Caltrans reports that 580 is now open in Alameda County.

In Santa Cruz County, however, Caltrans just announced State Route 9 is closed from Vernon Street to Glengarry Road after a number of mudslides swept over the road. There is no estimated reopening time.

Jan. 1, 7 am With the New Year dawning clear and cold across most of the Bay Area, flood waters are finally receding, but a few arteries in the region are still closed. The biggest among them is a stretch of 580 between San Leandro and Hayward; it’s been closed since about 7 am Saturday, with CHP hoping to reopen it in a few hours.

A view of landslide on Highway 92 in San Mateo County.  (Photo by Tayfun Coskun/Anadolu Agency via Getty Images)

A view of landslide on Highway 92 in San Mateo County. (Photo by Tayfun Coskun/Anadolu Agency via Getty Images)

Anadolu Agency/Anadolu Agency via Getty Images

Niles Canyon Road is inaccessible between Fremont and Sunol. It was flooded Saturday and is still being pumped free of water. Highway 92 in the Crystal Springs Area is also closed due to earlier flooding leaving debris on the roadway.

Further south, a number of spots along Highway 1 in the Big Sur area are closed due to mudslides. Check traffic apps before leaving home, as your usual routes around Northern California today may be inaccessible.

Dec. 31, 9:50 p.m

A shelter-in-place order due to heavy flooding has been issued to Watsonville residents living along Bridge Street and in surrounding areas, the Watsonville Police Department announced. Residents are advised to stay in their homes, as driving on flooded streets is highly discouraged. City crews are working to reduce water levels on streets in the area.

Dec. 31, 9:30 p.m

All northbound and southbound lanes of Highway 101 in South San Francisco have reopened, California Highway Patrol announced.

Traffic drives through flooded lanes on Highway 101 in South San Francisco, Calif., Saturday, Dec.  31, 2022.

Traffic drives through flooded lanes on Highway 101 in South San Francisco, Calif., Saturday, Dec. 31, 2022.

Jeff Chiu/AP

Dec. 31, 8:30 p.m

Northbound lanes of Highway 101 in South San Francisco have reopened after being closed for several hours due to flooding, California Highway Patrol announced. Southbound lanes in the area remain closed.

Dec. 31, 5:05 p.m

California Highway Patrol is currently assisting several cars and a big rig truck whose drivers allegedly ignored the road closures in place on Highway 101 and subsequently became submerged or stuck on the flooded highway.

According to CHP, the big rig is stuck on a guardrail at the South San Francisco exit and will need to be towed away. Drivers are being implored to avoid the area and not drive through the road closure.

Dec. 31, 4:00 p.m

A mudslide has impacted the westbound lanes of I-580 near Dublin in Alameda County, blocking the far right lanes east of Eden Canyon Road. Motorists should expect delays as crews work to clear the road.

Dec. 31, 2:31 p.m Highway 92 is now open in both directions.

State Route 9 is closed from Bear Creek Road to Riverdale Boulevard in the Boulder Creek area of ​​Santa Cruz County due to mudslide activity.

Dec. 31, 1:22 p.m Evacuation orders have been issued in Felton Grove and Paradise Park in Santa Cruz County. Those in the area are encouraged to move to higher ground for safety. Check evacuation zones here.

Dec. 31, 12:23 p.m Multiple mudslides have been reported in San Francisco and drivers should avoid certain roads. Avoid the area of ​​O’Shaughnessy Blvd & Malta Drive, the 400 Block of Ulloa Street and the Bernal Heights Park Parking Lot. Follow the San Francisco Department of Emergency Management for updates.

The National Weather Service reported that the city has already hit a record for rainfall today at 2.96 inches, beating the previous record in 2005 at 2.12 inches.

Dec. 31, 11:27 am Highway 101 in South San Francisco is closed both ways due to “major flooding.” I-280 is recommended as an alternate route.

Dec. 31, 10:05 am The Fremont Police Department reported that Niles Canyon is closed due to a mudslide. It could reopen by noon, but Caltrans is still evaluating the damage. Roadways in Belmont are experiencing flooding and motorists are encouraged to steer clear of Harbor Blvd. and parts of Ralston Ave.

Dec. 31, 9:42 am I-580 is closed between Fairmont and 150th Ave. due to flooding. No reopening time is yet known.

Coastal flooding has closed the northbound lanes of SR-35 at Sharp Park Rd in Pacifica, the Pacifica Police Department reported.

Highway 9 is closed north of Big Creek, Santa Cruz County reported.

Dec. 31, 7:57 am Sections of Highway 92 are flooded from Skyline Blvd to Main Street in Half Moon Bay, Cal Fire reported Saturday morning, and that section of the highway has been closed. No reopening time has been set.

Parts of Highway 1 have been closed at multiple points due to flooding. In Monterey County, it’s closed due to rockslides from Ragged Point to approximately two and one-half miles south of Big Sur, Caltrans reported. There is no estimated reopening time.

Route 84 was shut down in part of Alameda County between Old Canyon Road in Fremont and Main Street in Sunol due to a mudslide and rockslide Friday. The road reopened by 8 pm There was also a closure of Highway 9 between Waterman Gap and Upper Highway 236 in Santa Cruz County that has since reopened.

The National Weather Service expects the worst of the storm to hit late Friday and into Saturday morning. The storm brings with it the possibility of gusting winds, downed power lines, falling trees and landslides. Because so much moisture has already seeped into the soil this week, it is possible that further saturation will cause widespread mudslides, especially in wildfire burn scars that have fewer sturdy tree roots keeping the soil in place.

Full Bay Area Storm Coverage



SFGATE managing editor Katie Dowd contributed to this report. This is a developing story.

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