TPW Roads

Highway 12 Corridor Improvement Project - Phase II, Stage 1

Project # C03401

Status: Complete


State Highway 12, North of the city of Sonoma, between Donald Street and Boyes Boulevard.


Construction of shoulder widening, curb, gutter and sidewalk and pedestrian lighting, traffic striping and traffic signals and other improvements as shown on the plans.


  • Bid Date: September 30, 2008

Contact Information

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
Office Location
La Plaza B
2300 County Center Drive
Suite B 100
Santa Rosa, CA 95403
38.462023, -122.725381

Standard Plans

Construction Standards for County Roads


Standard plans for construction of roads and related structures.