Sonoma Public Infrastructure
Sonoma Public Infrastructure's offices are now located at 400 Aviation Blvd, Suite 100, Santa Rosa, CA 95403.
Mission & Vision
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.
Divisions
Airport
The Airport Division operates the Charles M. Schulz Sonoma County Airport, located North of Santa Rosa, and connects customers to cities in Alaska, the lower 48 states, Hawaii, Canada, and Mexico.
Integrated Waste
The Integrated Waste Division owns the Sonoma County Central Landfill, which houses facilities for recycling, material reuse and natural gas and electricity generation. It owns five refuse transfer stations, oversees the regulation of two commercial hauling companies and maintains closed landfills.
- For disposal inquiries please contact (707) 795-1693.
Roads
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.
Transit
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.
Water Systems
Water Systems administers service to four small districts: Fitch Mountain, Freestone, Jenner, and Salmon Creek.
Sonoma County purchases seven all-electric transit buses in continued shift toward zero-emission public transportation
The Board of Supervisors today approved the purchase of seven battery electric transit buses to replace natural gas-powered buses in the current fleet that have exceeded their 12-year minimum service life required by the Federal Transit Administration. The seven new buses are scheduled for delivery in November 2026 and will be deployed on Sonoma County Transit’s main intercity routes that operate between Monte Rio, Santa Rosa and Sonoma (Routes 20 and 30) and between Petaluma, Santa Rosa and Cloverdale (Routes 44/48 and 60).