SR 29 – American Canyon

On October 4, 2021, the Napa Valley Transportation Authority and the City of American Canyon sponsored a public meeting for the SR29 American Canyon Multimodal Improvement Project. To view the public meeting, please go to

Comments on the project can be made at  SR 29 American Canyon Multimodal Improvement Project Social Pinpoint. NVTA thanks you for your continued support with this very important project.

Project Initiation Document (PID):

NVTA is working with Caltrans and American Canyon on multimodal and operational improvements to SR 29 between Napa Junction and American Canyon Road.  The PID builds off the prior study completed as part of the SR 29 Comprehensive Multimodal Corridor Plan (CMCP), which was released in 2020. 

The project purpose:

  • Improve mobility for all users

  • Improve safety for all users through Vision Zero

  • Eliminate overhead utility poles

  • Improve corridor aesthetics

  • Reduce vehicle miles traveled (VMT) by encouraging transportation mode shift

  • Improve access to businesses along SR 29

  • Improve accessibility for all modes of transportation

The project need:

Regionally, SR 29 provides direct connection between Solano, Napa and Sonoma counties in the North Bay.  Locally, SR 29 is also the lifeblood of access into and out of Napa County.  Vehicle volumes on SR 29 are comparable to other nearby state highways SR 12 and SR 37. However, because the SR 29 corridor functions as American Canyon’s “Main Street”, it experience significant safety, aesthetic, and operations issues between Napa Junction and American Canyon Road.  Some of the most pronounced issues of the corridor include:

  • Lack of multimodal connectivity – particularly for bicycle and pedestrian access – along and across SR 29

  • Lack of low-stress routing options for bicyclists and pedestrians along SR 29

  • Lack of public transit lanes, facilities and pullouts for stops

  • Lack of aesthetic benefits like landscaping to help define American Canyon’s Main Street

  • Regional traffic congestion which hinders access to American Canyon’s commercial business

  • Constraints at intersections that cause extensive queueing, bottlenecks and delays

Tentative Project Timeline:

PID completion March 2022

Environmental and Engineering Phase – March 2022 – Spring 2023 (funding dependent)

Final Design – Summer 2023 (funding dependent)

Construction 2024 (funding dependent)