Video simulation shows how new overpass and two roundabouts will help motorists, pedestrians and bicyclists
Napa County – Caltrans and the Napa Valley Transportation Authority (NVTA) today released a video demonstrating how the State Route 12/State Route 29 (SR-12/SR-29) Soscol Junction Roundabout Project will ease commuter times for motorists and improve access for pedestrians and bicyclists. The funding for the $54 million southern Napa project includes nearly $20 million from Senate Bill (SB) 1, the Road Repair and Accountability Act of 2017, and is expected to be completed in late summer or early fall 2024.
The three-year project is replacing the signalized intersection of State Route 12/29, State Route 221, and Soscol Ferry Road with an interchange composed of an overpass and two roundabouts—a configuration that will significantly improve traffic flow, reduce congestion, and enhance connectivity and safety for people who walk and bike.
Unlike traditional intersections managed by traffic signals, roundabouts compel motorists to slow down in all directions and proceed with caution—creating more opportunities to spot other vehicles and see bicyclists and pedestrians who also share the roadway.
“Working with the Napa Valley Transportation Authority, we created a plan to construct an interchange that significantly improves safety, reduces traffic congestion, and also blends compatibly with the surrounding ecology,” said Sean Nozzari, Caltrans Bay Area Deputy Director of Traffic Operations.
In addition to the $19.7 million in SB1 funding, the project is supported with $29.8 million in state and regional funds, and $3.7 million in local funds.
Sitting at the base of Napa County, Soscol Junction serves as a front door to one of the most iconic tourist destinations and winemaking regions on the globe.
“The Soscol Junction Project will dramatically improve travel near the gateway to downtown Napa, and other parts of this remarkable Valley,” said Liz Alessio, Board Chair of the Napa Valley Transportation Authority.
The project also improves access for pedestrians and cyclists with1,200 feet of Class I bicycle lanes and walking paths. Eventually these lanes will connect to the Vine Trail, a 47-mile multi-use path that will stretch from Calistoga to the ferry in Vallejo.
For more information, visit the Soscol Junction Project webpage: https://dot.ca.gov/caltrans-near-me/district-4/d4-projects/soscol-junction
Find more projects that are building California’s future at build.ca.gov and RebuildingCA.ca.gov.
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