Road Project Planning & Reports

Long-Term Road Plan

In fall 2014, the Board of Supervisors adopted the Long-Term Road Plan, laying a path for improving roads that are most traveled and vital to local communities, economic development, agriculture, recreation and tourism.

The Board has identified a funding plan that would allow us to reach our initial goal of improving over half of our roads in the County - 850 miles.

Long-Term Road Plan 2014 (PDF: 5.86 MB)

Fact Sheet: Long-Term Road Plan 2014 (PDF: 1.16 MB)

Presentation: Sonoma County Roads (PDF: 3.03 MB

2012 Ad-Hoc Roads Report

In February of 2012, the Board of Supervisors formed an Ad-Hoc Committee (Supervisor Shirlee Zane and Supervisor David Rabbitt) to achieve the following:

  1. Find additional dollars to address deferred maintenance
  2. Look for long-term and short- term solutions
  3. Review the use of prioritization
  4. Put more General Fund dollars into Sonoma County roads.

Their findings are presented in the 2012 Ad-Hoc Roads Report, which is available for download in Adobe Acrobat format:

Download the 2012 Ad-Hoc Roads Report (PDF, 2.48 MB)

2015 Roads Financing Report for the Long-Term Roads Plan

In November, 2015 the Board of Supervisor's heard a road funding report and recommendation from the Department of Transportation and Public Works. You can download the Board Item, Report, and Presentation here (PDF).

Based on this information, the board approved $13.5 million in new one-time funding for roads. The one-time allocation of $13.5 million is from a combination of sources in the general fund, including the Tax Loss Revenue Fund from delinquent property tax payments (2.8 million in excess of the reserve in both 2015 and 2016, and 6.5 from the reserve) and various fund balances. The board dedicated fund balances from fees charged to offset the negative impacts of aggregate mining ($90,000) and waste hauling ($709,000); funds collected to offset impacts of cannabis farming ($213,200); and funds that had been set aside to incentivize local leveraging for special districts to match road funding ($357,400). The Board also reinforced their commitment to stable, ongoing funding by indexing the annual general fund contribution toward road repair by up to 2% annually.

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

Information Resources

Road-Related Information and Downloadable Resources

Construction Standards
View and download standard plans for new construction on County roads.

Traffic Surveys
See traffic counts and speed surveys taken on Sonoma County roads.

Download the Postmile Book, a detailed listing of significant locations along County roads.

Road Jurisdictions
State, county, city or private? Find out which agencies are responsible for which roads.