King County Road Services - Mitigation Payment System Program

The Mitigation Payment System Program (MPS) provides funding for transportation road improvements necessary for mitigating the traffic impacts of new development on the roadway system. This website provides information about the program.

• Fee schedule


• List of adopted MPS projects (157KB .pdf)


• Map of MPS zones (3MB .pdf)


• Frequently-asked questions


• Fee Reconsideration Request instructions


• Public rules


• County Code, Title 14 (436KB Acrobat .pdf)

For further information, please contact:

David Mark, Transportation Planner IV
King County Department of Transportation
Road Services Division
201 South Jackson Street MS KSC-TR-0317
Seattle, WA 98104-3856
(206) 263-6273

Information from the Road Services Division's website is available to people with disabilities in alternate formats upon request by calling 206-263-6482 or 711 for the TTY relay service.

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