Napa County Quarterly Caltrans Update

Banner image for the Napa County Bi-Monthly Caltrans Update.

Safety first – Cultivate excellence – Enhance and connect the multimodal transportation network – Strengthen stewardship and drive efficiency – Lead climate action – Advance equity and livability in all communities


Welcome to the February edition of the bi-monthly Napa County Caltrans E-Newsletter!

Caltrans wants residents and visitors to Napa County to be informed of changes and improvements to the roadways in the county which make it arguably the best place to live, work, and play in the Bay Area.

Besides the wineries and the scenic views which make it an exciting destination for travelers, there were some other events happening in recent months.

In January, Napa County was the first of three stops for the San Francisco Giants caravan fan fest tour where players and coaches met fans to sign autographs, take photos and participate in Q&A sessions.

Napa also recently had its Lighted Art Festival which was a walkable outdoor nighttime experience in Downtown Napa featuring 11 lighted art sculptures for five weeks and projection artwork on three iconic downtown buildings.

LINKS:

Visit our project website for additional updates.

For project questions & to sign up for our weekly newsletter, please contact us at EMAIL.

Soscol Junction Roundabout Project

Photograph of cars traveling through a new roundabout at Soscol Junction in Napa County,

The State Route 29/ State Route 221 (SR 29/SR-221) Soscol Junction Roundabout Project is currently in phase 6 of 6 total construction phases. The Project is nearing 100% completion.

The ribbon cutting for Soscol Junction was held on September 13, 2024 at The Meritage Hotel and Resort and the remaining work on the roundabout is landscaping and installation of a power pole to provide better lighting on the roadway.

Traffic lanes on both directions of SR-221 are utilizing the bridge overcrossings with exits provided by the two roundabouts.

This project replaced the signalized intersection of SR-29, SR- 221 and Soscol Ferry Road with an interchange comprised of a new overcrossing carrying SR-29 traffic over SR-221/Soscol Ferry Road and two multi-lane roundabouts on either side of the new overcrossing.

New on- and off-ramps were constructed to provide the connection of SR-221 and Soscol Ferry Road traffic traveling through the two roundabouts to SR-29. This configuration will smooth out traffic flow, reduce congestion and enhance bicycle and pedestrian connectivity.

In partnership with the Napa Valley Transportation Authority (NVTA), final construction on the new southbound lanes of SR-29 and the two roundabouts of SR-221/Soscol Ferry Road traffic were completed in December 2024.

The project also includes a new 1,200-foot Class I bicycle and pedestrian path. Eventually, the path will connect to the Napa Valley Vine Trail - a 47-mile multi-use path that will stretch from Calistoga to the Vallejo ferry terminal.

In addition to funding from the Road Repair and Accountability Act of 2017 (SB-1) $19.3 million in state and regional funds and $3.7 million in local funds will be used in the total approximate project cost of $ 54 million for the Soscol Junction Project.

Here is a recent video tour of the roundabout.

Soscol Junction Interchange Project

Culvert replacement on SR-29 South of Calistoga

A culvert is a tunnel carrying a stream or open drain under a road or railroad. On State Route 29, the main highway that runs through Napa County, there are many culverts that help to direct rain water away from hills and creeks.

Photograph of a damaged culvert near Calistoga, California.Two Caltrans employees inspect a damaged culvert near Calistoga, California.

Heavy rains caused a culvert running south of Calistoga to St. Helena, damage to one area that requires Caltrans engineers to devise a plan to drain the culvert and repair the hillside as seen in these photos.

Caltrans engineers discuss plans to address a damaged culvert near Calistoga, California.Caltrans engineers evaluate a damaged hillside near Calistoga, California.

Rutherford Maintenance

Many of Napa County’s roads date back to the 1950’s and earlier. To keep those roadways safe and secure, Caltrans maintenance crews are always cleaning away vegetation and debris and providing necessary repairs such as grinding and paving.

There have been significant “atmospheric river” storms this winter. And in preparation to mitigate damage to the roads, Caltrans recently had crews shoveling and sweeping away debris along with using sweeping equipment and we got a firsthand look at the crews in action back in November.

Following this work, we returned to the area in January where paving grinding and paving was done to repair sections of the roadway that needed replacement due to wear and tear.

Caltrans maintenance crew uses heavy machinery to work on a roadway.Caltrans crew applies new pavement as part of a roadway repair.

Maintenance Work in Rutherford

Current 2025 Napa County Maintenance Highlights Chart

Setting the PACE: Public Affairs Customer Engagement Site is Now Live!

Banner image for Caltrans District 4 PACE (Public Affairs Customer Engagement). Besides the name, banner includes the Caltrans logo in an orange circle that has a headset around it..

District 4 is proud to announce the launch of our new Customer Service Request (CSR) platform. PACE, the Public Affairs Customer Engagement site, provides a regularly updated breakdown of services requested and rendered across the district.

  • The CSR dashboard aims to provide an overview of the responsiveness to maintenance services requested across the nine Bay Area counties.
  • The data represented as month-to-date falls within a rolling 30-day Service Level Agreement (SLA) and is updated weekly.
  • We strive to close 60% (or more) of all monthly service requests received via the CSR website portal.
  • For more information or to leave comments/suggestions, please contact D4CSLTEAM@dot.ca.gov.
  • To report a highway issue/problem, please submit a CSR ticket through the Customer Service Request Form.

The Napa County newsletter will be distributed on a bi-monthly schedule.

Caltrans bay area logoFor 24/7 traffic updates, please visit 511.org or https://twitter.com/511SFBay
For real-time information, please visit Caltrans QuickMap:  http://quickmap.dot.ca.gov

CONTACT:

Napa County Public Information Officer

Ryan Leong 

General Information
(510) 286-4444

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