Keeping Sonoma County Moving

A collaborative agency of the cities and County of Sonoma, we work together to maintain and improve our transportation network.

What’s New

  • 30-Day Closure of State Route 12 near Agua Caliente In Sonoma County for Bridge Replacement

    As part of the Sonoma and Hooker Creek replacement project, Caltrans will close State Route 12 (SR-12) between Madrone Road and Agua Caliente Road for up to 30 days to allow work crews to demolish and rebuild the Hooker Creek Bridge. The bridge is located northwest of the city of Sonoma in the “Springs” area of Sonoma County.

    Please see the Caltrans Traffic Advisory for more information.

Measure M Transportation Funding Activities
SCTA & RCPA Activities in 2022
Committees and Board meetings
Ending Traffic Deaths by 2030
Updates on Highway 37
Comprehensive Transportation Plan

The Sonoma County Transportation Authority (SCTA) was created in 1990 and is governed by a twelve-member Board of Directors representing each of the nine cities – Cloverdale, Cotati, Healdsburg, Petaluma, Rohnert Park, Santa Rosa, Sebastopol, Sonoma and Windsor – and the Sonoma County board of Supervisors.