About Us

Mission & Vision

The Transportation and Public Works Department (TPW) administers critical services and infrastructure, including roads and public transit, an airport, multiple waste disposal sites, water systems, as well as regulation of air quality and emissions.

Our Mission:  to plan, build, manage, and maintain Sonoma County's investment in quality services and infrastructure.  

Our Vision:  Leading the way to a safe and sustainable community through stewardship and innovation.



The Airport Division operates the  Charles M. Schulz Sonoma County Airport, located North of Santa Rosa, and connecting customers to cities in Alaska, the lower 48 states, Hawaii, Canada and Mexico.

Integrated Waste

The  Integrated Waste Division operates the  Sonoma County Central Landfill, which houses facilities for recycling, material reuse, natural gas and electrical generation, and composting of organic materials. It also operates an additional five (5) refuse transfer stations located in Sonoma County, and oversees the regulation of two (2) commercial hauling companies.


The  Roads Division is responsible for the construction, operation, and maintenance of the County-Maintained public road system, and administers numerous capital paving and road safety improvement projects every year.


The Transit Division administers  Sonoma County Transit, Sonoma County's own public transportation system. This state-of-the-art fleet serves numerous locations across Sonoma County.

Disadvantaged Business Enterprise (DBE)

The County of Sonoma Transportation & Public Works Department is committed providing equal opportunity for the socially and economically disadvantaged, minorities, women, and small businesses participating in contracting opportunities.

Read about the Disadvantaged Enterprise Program

Contact Information

Johannes J. Hoevertsz


Transportation & Public Works
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
38.462006, -122.725384

Funding Public Works

Funding Sources/

Funding Sources for County Roads

75x75 - Dollar Signs

Find out about how County Public Works projects are funded

Equal Opportunity


Disadvantaged Business Enterprise Program


Committed to equal opportunity in contracting with business.