Highway 101 and State Route 25 will have a new alignment

Beginning on the morning of Jan. 13, 2026, the Highway 101 northbound on and off ramps for State Route 25 will be on a new ...

Some exits on Highway 101 closing in Marin as flooding continues, traffic delays expected

Amid the deluge Monday, officials also closed some roads that run between Sonoma and Napa, including Highway 121 at junctions with Eighth Street East and with Highway 116. Highway 12 was also closed ...

Two lanes of northbound Highway 101, north of Ventura flooded

Only one lane on northbound Highway 101, north of Ventura, is available to travel on due to flooding, according to authorities.
The Press Democrat

Highway 101 flooding solution in central Marin remains years away

Inundation around Corte Madera Creek is a multi-jurisdictional problem without an easy fix. The second in a series of five ...
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Highway 101 to close near Tumwater Truck Route

PORT ANGELES — U.S. Highway 101 will close to all travelers for close to two weeks near the Tumwater Truck Route (state Highway 117) beginning Sunday. Contractor crews working for the state Department ...
Santa Rosa Press Democrat

Marin, Sonoma propose transit overhaul along Highway 101

A North Bay transportation committee is proposing some major changes to transit, including bus and train, along the Highway 101 corridor to improve service in Marin and Sonoma counties. The committee ...

Highway 101 ramps to close in SLO County. Here's when and where

Two Highway 101 ramps in Arroyo Grande will close starting at 7 p.m. on Sunday, Jan. 11, Caltrans said in a news release.