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Highway SR-121 Lane Closures, Road Construction and Blocked Lanes

The following is a list of CalTrans lane closures, road construction, and blocked lanes that are active or plannded for on Highway SR-121

CalTrans Lane & Road Closures on Highway SR-121 How does freeway lane numbering work?

In Sonoma Lane #1 will be closed overnight for roadway excavation along North / southbound Highway 121 at Bonneau Rd from Apr 26 at 9:01PM to Apr 27 at 4:59AM.

From: Bonneau Rd to Sonoma Green Acres/Scarafoni Rd in Sonoma
Google Maps & Street View
ID: C121FA-0001-2024-04-26-21:01:00

In Napa Lane #1 will be closed for drainage work along North / southbound Highway 121 at Wooden Valley Rd from May 1 at 8:01AM to May 1 at 5:01PM.

From: Wooden Valley Rd to Wooden Valley Rd in Napa
Google Maps & Street View
ID: C121GA-0001-2024-05-01-08:01:07

In Napa Lane #1 will be closed for drainage work along North / southbound Highway 121 at Wooden Valley Rd from May 2 at 8:01AM to May 2 at 5:01PM.

From: Wooden Valley Rd to Wooden Valley Rd in Napa
Google Maps & Street View
ID: C121GA-0002-2024-05-02-08:01:07
See all lane closures...