King Tides Flood Mill Valley Roads After Golden Gate Bridge Crash

High-tide flooding closed stretches of Miller Avenue and the Redwood Highway frontage road in Mill Valley on Tuesday morning, Oct. 27, 2026, as King Tides pushed Richardson Bay waters over low-lying Marin County corridors, according to NBC Bay Area and ABC7 News. The coastal inundation followed a disruptive morning commute in which a two-vehicle injury collision shut down all northbound lanes of Highway 101 at the midspan of the Golden Gate Bridge for more than an hour (NBC Bay Area, ABC7 News).

Miller Avenue, Camino Alto, and Redwood Highway Flooded by King Tides

Mill Valley police closed Miller Avenue between Camino Alto and Almonte Boulevard, as well as the Redwood Highway frontage road and adjacent multi-use pathways near Bothin Marsh, after late-morning peak tides flooded traffic lanes and parking lots.

The National Weather Service has issued a Coastal Flood Advisory for shoreline communities along San Francisco Bay and San Pablo Bay through 2:00 p.m. Friday, Oct. 30, 2026, warning drivers never to drive through standing saltwater and advising residents in low-lying North Bay marshes and marinas to prepare for daily midday tidal overflow.

Two-Vehicle Midspan Crash Blocks Northbound Golden Gate Bridge

Earlier Tuesday morning, shortly after 6:00 a.m., the California Highway Patrol and San Francisco Department of Emergency Management reported a two-vehicle crash with injuries at the midspan of the Golden Gate Bridge that blocked all northbound lanes of Highway 101 heading into Marin County.

Traffic backed up across San Francisco approaches for more than an hour before authorities reopened all northbound lanes by 7:30 a.m., according to ALERTSF.