Motorists to expect delays on State Route 128 over Conn Creek in Napa County


District: District 4 - Oakland
Contact: Pedro Quintana
Phone: (510) 286-5620

Starting at 6:00 AM on Friday, August 14 and Monday, August 17, 2020 Flaggers will direct motorists during lane/highway closures

Napa County - Motorists traveling on State Route 128 (SR-128)/Silverado Trail  in Napa County should expect traffic delays near Conn Creek Bridge construction site starting at 6:00AM on Friday, August 14, and Monday, August 17.

Crews will be installing key bridge components for the Conn Creek Bridge Replacement project.

Motorists should expect a temporary lane or highway closure on SR-128 between Conn Creek Road and Sage Canyon Road starting 6:00 AM until 12:00 PM on Friday, August 14 and Monday, August 17.

Flaggers will direct motorists during these closures and traffic delays are to be expected.

The project is necessary because of the wear and tear on the existing bridge’s foundation from the creek’s current. The new bridge will be wider to accommodate trucks turning right from eastbound SR-128 (Conn Creek Road) onto Silverado Trail.

Construction is scheduled to take place during daytime hours with bridge construction tentatively expected to be completed by December 2020.

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