State Route 29/ 221 Soscol Junction Interchange Project: Napa County SR-221 detour to begin on Thursday, February 2,2023.


(Motorists are encouraged to use Napa Valley Corporate Way to Soscol Ferry Rd)

NAPA COUNTY- Caltrans is continuing work on The Soscol Junction Interchange Project at the State Routes 29/221 interchange. A detour for State Route 221 will be in effect as traffic will no longer be able to access Soscol Ferry Rd until Spring of 2024.

As part of the ongoing work, beginning Thursday Feb. 2, motorists traveling on Southbound SR-221 will not be able to exit to Soscol Ferry Road and a temporary detour will be set in place.

Motorists will be detoured to turn right at the intersection of Napa Valley Corporate Way, turn left on Napa Valley Corporate Dr. and left to access Soscol Ferry Rd.

The closure will allow construction crews to begin the next construction phase.

For 24/7 traffic updates, please visit
For real-time information, please visit Caltrans QuickMap:
Or follow Caltrans on Twitter at:

| | #BeWorkZoneAlert | Twitter | Facebook | YouTube |