State of California • Department of Transportation



State Route 121-Between State Route 128 and Wooden Valley Road

Closed Until Further Notice-Storm Damage


NAPA COUNTY– State Route 121 (SR-121) in Napa County will remain closed until further notice for emergency roadway repairs. The closure is located on SR-121 between SR-128/Capell Valley Road and Wooden Valley Road. SR-121 will remain closed while crews begin repairs and determine long-term traffic plans after the roadway was undermined during this weekend’s storm. Caltrans will make an announcement as soon as additional information is available.

SR-121 Detours

Westbound SR-128 motorists headed to southbound SR-121 will be detoured to westbound SR-128 to SR-29. Motorists from Napa wanting to avoid the closure are advised to use northbound SR-29 to eastbound SR-128. Motorists from Wooden Valley Road will be detoured to southbound SR-121 to northbound Sr-29, then eastbound SR-128.

Latest Updates

For 24/7 updates check 

Or follow us on Twitter:

Caltrans appreciates your patience as we work to repair the highway.  


                            (Photo courtesy of Caltrans, March 14, 2006)                                              


SR-121 roadway in Napa County damaged during weekend storm.