Caltrans District 4 Napa County Newsletter

Napa County Newsletter Banner Issue 1 2026


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For project questions & to sign up for our weekly newsletter, please contact us at Geoffrey.johnson@dot.ca.gov.

 

Welcome to the 2026 summer edition of the Napa County Vine newsletter. I am Geoffrey Johnson, your new Napa County Public Information Officer, and I will provide the latest Caltrans Napa County Project updates.

This newsletter is designed to highlight the roadway projects that are keeping our highways open and safe during this busy summer season.

In addition to project updates, this edition will briefly mention the activities of our partnering agencies and how these efforts support the Resilient State Route 37 Program, which aims to reduce traffic congestion in the North Bay.

State Route 37 Corridor Projects Logo

Erosion Control Work On State Route 121 (SR-121);
Resurfacing Work On State Route 128 (SR-128)

Caltrans continues to advance several roadway improvement projects.

Currently, the team is performing erosion control work on SR-121/Monticello Road in Napa County.

This work is critical in prolonging the life of the roadway and managing water flow and proper drainage during seasonal rains, which is crucial in maintaining vehicle access throughout the region.

In addition to this critical roadway erosion project, Caltrans is performing resurfacing work on SR-128 between St. Helena and the City of Napa in the unincorporated portion of the county. This work is critical in increasing safety, restoring the roadway and improving riding quality.

Caltrans using heavy equipment for erosion control work on SR-121/Monticello Road in Napa County.
Caltrans performing erosion control work on SR-121/Monticello Road in Napa County.

Caltrans using heavy equipment for resurfacing work on SR-128 between St. Helena and the City of Napa in the unincorporated portion of the county.
Caltrans is performing resurfacing work on SR-128 between St. Helena and the City of Napa

Caltrans using heavy equipment for resurfacing work on SR-128 between St. Helena and the City of Napa in the unincorporated portion of the county.
Caltrans is performing resurfacing work on SR-128 between St. Helena and the City of Napa


Caltrans Completes Several Projects In Napa Valley

Completed culvert replacement on State Route 29.
Cars traveling on the completed culvert and roadway replacement on State Route 29.

While there are ongoing Caltrans roadway improvement projects, there are projects that have been completed.

The SR-29 Culvert and Roadway replacement project between Rutherford Road and Oakville Cross Road is complete.

The new culvert will manage water flow during seasonal rains and prevent roadway flooding and damage to surrounding properties. It will enable the public to safely travel throughout the region.

The SR-29 Guardrail Project between the Napa River (George F. Butler Memorial) Bridge and Trancas Street has been completed.

These new barriers will continue to protect roadway users, keep vehicles safe and enhance driver’s confidence.

Meanwhile, Caltrans upgraded roadway signs on SR-12 near Airport Boulevard and on SR-29 between Lincoln Avenue and West Imola Avenue.

The work included both the replacement of existing signs and enhancements to improve signage visibility. This work is important for drivers’ confidence and safety.

Caltrans worker leveling a new guardrail on State Route 29 between the Napa River (George F. Butler Memorial) Bridge and Trancas Street for the SR-29 Guardrail Project.


What Projects Are On The Horizon For Napa County?

Aerial view of the Sr29/12/Airport Blvd and SR12/Kelly Road Interchange.

New projects are emerging in the county as well.

Caltrans, in partnership with The Napa Valley Transportation (NVTA) Authority, The City of Napa and Napa County, are advancing safety and congestion relief improvements on the SR-12/SR-29 Airport Boulevard and SR-12/Kelly Road Interchange Project.

NVTA and Caltrans District 4 are leading the efforts on the performance-based alternatives analysis and the environmental review.

This intersection in Southern Napa, also known as the Jameson Canyon Interchange, experiences rush-hour congestion and back up. This project is designed to ease rush-hour traffic and congestion and support the Resilient State Route 37 Program’s goals for regional traffic relief and better access for public transit. Read more about the North Bay regional goals in the following link: SR37 Corridor Projects | Caltrans

NVTA has led two community workshops and distributed a survey to get feedback from stakeholders on the three alternatives under review. Pending funding, construction is projected for 2030.

The latest information on the SR-29/12 Airport Boulevard Project can be found at the following link: SR29/12/Airport Blvd & SR12/Kelly Rd Interchange Project - NVTA

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 Vine newsletter is distributed quarterly

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Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.

CONTACT:

Napa County Public Information Officers

(510) 286-4444

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