TPW Roads

Current Road Projects

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  • 2147497245 Sonoma Mountain Road Viaduct Repair false false false 1 Full Declaration December 12, 2016 Re: Public Contract Code § 22031(b)(1); Emergency Work Declaration Whereas, Public Contract Code section 22031(b)(1) authorizes a county road c

  • The County of Sonoma Department of Transportation and Public Works is undertaking a project to signalize and widen Adobe Road at East Washington Street.  The project consists of signal installation, road widening, drainage improvements and pavement markings and striping.

  • See all major road paving projects being done on (unincorporated) Sonoma County Roads in 2016, including the Road Maintenance Chip Seals, Bonded Wearing Course & Overlays, and Full-Depth Reclamation & Chip Seals projects.

  • This fall we will construct ADA improvements in the town of Graton. We will remove and upgrade sidewalks and other access features to make them ADA compliant. In some cases, we may remove only segments of sidewalks or ramps to make the necessary improvements.

  • The project is located on Highway 101 at Airport Boulevard in Sonoma County between the cities of Santa Rosa and Windsor near the Sonoma County Airport. The project proposes to construct landscape improvements through an encroachment permit issued by Caltrans as a follow up to the Highway 101 North/Airport Boulevard interchange and sound walls project.
  • This project consists of widening of the roadway, as well as construction of curb and gutter, sidewalks, pedestrian lighting, traffic striping and traffic signals, other improvements as shown on the plans.
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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

Road Commissioner Project Declarations

See Road Commissioner Project Declarations


See listing of road projects declared by the Sonoma County Road Commissioner

Standard Plans

Construction Standards for County Roads


Standard plans for construction of roads and related structures.


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