Friday, August 28, 2015

Sarco Creek Bridge-Napa- Northbound SR121-Detours Start Sept 14

State of California • Department of Transportation


Date: August 28, 2015
District: 4 - Oakland
Contact: Vince Jacala
Phone: (510) 286-5206


Sarco Creek Bridge Project- Napa
Northbound State Route 121- Detours Start September 14, 2015

NAPA COUNTY– The California Department of Transportation (Caltrans) is working closely with PG&E and other local utility providers to relocate utilities during preliminary work on the State Route 121 (SR-121) Sarco Creek Bridge Replacement Project. Construction of the replacement bridge is scheduled to start in early 2017.

PG&E will underground gas utility lines on and near the SR-121 Sarco Creek Bridge. The bridge is located in Napa County just south of Rose Drive near the Napa City Limit.

To ensure public and worker safety, full bridge closure of northbound SR-121 is necessary and scheduled to go into effect starting Monday, September 14 at 8:00 AM until Friday, October 1. All work is subject to weather conditions.

Northbound SR-121 Sarco Creek Bridge Detour Route
During the northbound bridge closure, motorists are advised to use the following detours: Motorists traveling on northbound SR-29 will be detoured starting at the SR-121/SR-221 interchange. Motorists will need to travel on northbound SR-29, then eastbound onto Trancas St., then re-enter northbound SR-121 from Trancas St. Detours signs and changeable message signs will be posted.

Northbound SR-121 will remain open up to the point of the Sarco Creek Bridge for local traffic only. Northbound traffic will not be allowed onto the bridge during the work. Southbound SR-121 will remain open.

Detours Hours
The northbound SR-121 closure will be in effect from 8:00 AM until 4:00 PM each day starting September 14 until September 26. After September 26, the northbound SR-121 closure will be in effect 24 hours a day until October 1.

For real-time traffic, go to Caltrans Quick Maps at:

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Caltrans appreciates your patience as we work to maintain our bridges and highways.
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