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Sonoma Public Infrastructure (formerly TPW)

About Us

Transportation and Public Works is now Sonoma Public Infrastructure - Website updates coming soon!

Mission and 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 connects 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 electricity 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.