Photo: Yalonda M James / The Chronicle
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Intense rainfall and high winds early Thursday continued to cause flooding, mudslides and severe traffic alerts around the region to create havoc on the roads.
Several areas of the Sonoma County experienced major flooding, shutting down lanes of traffic. The California Highway Patrol reported flooding on Highway 1 between Valley Ford Road and Middle Road in Petaluma and on the highway between between North Bay Hill Road and South Harbor Way in Bodega Bay.
Flooding on Highway 121 between Fremont Drive and Eighth Street East, outside of Sonoma, also shut down all lanes of traffic, as well as both directions of Highway 12 between Watmaugh Road and Millerick Road.
A downed tree and wires reported at 7:30 a.m. on Highway 9 in Santa Clara County triggered a severe traffic alert. Officials closed the highway from the county line to the entrance of the Saratoga Springs event facility at 22801 Big Basin Way in Saratoga.
At 7:31 a.m., a downed tree was reported on Highway 84 at Foxhill Road in rural San Mateo County, closing all lanes in both directions, CHP said.
Sonoma-Marin Area Rail Transit also reported delays of up to 15 minutes because of the weather.
Rohnert Park Expressway was closed between Stony Point Road and the FoodMaxx grocery store at 605 Rohnert Park Expwy., and officials urged drivers to seek alternate routes.
The Mill Valley Police Department also issued an advisory Thursday morning for Miller Avenue in both directions between Almonte and Tam High due to flooding.
Traffic advisories were also issued for the region’s bridges because of the high winds and officials warned travelers to drive cautiously.
Officials closed one lane of southbound Highway 17 on Wednesday night because of a mudslide near Sugarloaf Road just outside of Scotts Valley in Santa Cruz County. The lane has not yet been reopened.
The Great Highway in San Francisco remained closed Thursday morning — more than 24 hours after its shutdown — and officials at the Department of Public Works have still not provided an expected time to reopen.
Authorities continued to shut down all lanes of Highway 35 between Page Mill Road and Highway 9 in rural Santa Clara County because of a sinkhole that caved in Feb. 4.
This post was originally posted at https://www.sfgate.com/bayarea/article/TRAFFIC-Bay-Area-roads-washed-out-by-floods-13616122.php.