SR-121 in Sonoma County is closed between 8th St East and Burndale Rd for smoke from a fire in the area. Please use alternate routes.

Update: SR-121 in Sonoma County is now open in both directions.

SR-121 north of SR-37 has one way traffic control in effect due to a fatal traffic crash. Please avoid the area.

SR-121 is now open.

SR-121 in Sonoma County from SR-37 to SR-116 is closed for a grass fire. Avoid the area! There is no ETO at this time. Sonoma Sheriff County of Sonoma Sonoma Raceway CHP Marin CHP SOLANO Caltrans District 4

Update: SR-121 should be open in approx. 30-45 minutes. Please drive with patience.

Arnold Dr in Sonoma County is blocked by several inches of pea gravel. Crews on scene to clean up. Use Petaluma Ave and Leveroni Rd as alternates. County of Sonoma Sonoma Sheriff

Update…the gravel spill on Arnold Dr in Sonoma County has been cleaned up. The road is now open. Drive safely!

*** TRAFFIC ALERT *** All lanes of SR-12 westbound, west of Kirkland Ranch are closed due to a crash. The current ETO is approximately two hours, expect delays and consider using alternate routes.

*** TRAFFIC UPDATE *** The #1 lane is now open.

All lanes are now open.

TRAFFIC ADVISORY Expect heavy traffic near Sonoma Raceway (CA-121/CA-37) for NASCAR event. Use alternate routes until approximately 1800 hours.

Chiles-Pope Valley Rd in Pope Valley, Napa County is closed due to a fatal traffic crash. Unknown ETO. Please use alternate routes.

*** TRAFFIC ADVISORY *** Chiles Pope Valley Road is closed in both directions from Howell Mountain Road to Pope Valley Cross Road due to a crash. The estimated time for reopening is approximately two hours, use alternate routes and expect delays.

***TRAFFIC UPDATE*** The roadway is now open.

Silverado Trail from Trancas St to Hardman Ave is closed due to a traffic collision. Please use alternate routes.

Update… Silverado Trail in Napa is now open. Please drive safely!

Tree down on SR-29 near Zinfandel Lane, south of St. Helena. Cal Fire on scene. Lanes will be open soon. Caltrans District 4 CALFIRE/Napa Co FD St Helens Star St. Helena, CA Napa County Sheriff's Office Napa Valley Register

Update… Tree has been removed. SR-29 at Zinfandel is open.

SR-29 south of Robert Lewis Stevenson has one way traffic control due to an overturned big rig. Expect delays as crews work to upright the vehicle and clean up the scene.