Traffic Impact Mitigation Fee Program


The fees collected by the TIM Fee Program are used to fund transportation improvements needed to accommodate growth anticipated by the County’s General Plan. The TIM Fee Program requirements shall be applicable to all new development located within the Western Slope boundaries of the County.

Improvements funded by the TIM Fee Program include, but are not limited to, new roadways, roadway widenings, roadway intersection improvements and transit. A TIM Fee program is legally required to meet guidelines as established by Assembly Bill 1600 (California Government Code Sections 66000-66008).

A major revision of the TIM Fee Program was adopted on December 6, 2016, and went into effect on February 13, 2017.  On December 12, 2017, the Board adopted the 2017 TIM Fee Schedule Update, including updates for cost adjustments in the TIM Fee Nexus Study.  On June 26, 2018, the Board adopted the 2018  Minor Technical TIM Fee Program Update.  New rates will go into effect on August 27, 2018.  Current TIM Fee Rates and supporting documents are located here.


A diagram of the process used in updating the CIP and TIM Fee Programs on an annual and five-year basis is included under Supporting Documents. For more information on the TIM Fee Program, click on the tabs below.

If you have questions on the Traffic Impact Mitigation Fee Program project, please contact:

Natalie Porter, Project Manager 
Traffic Engineer
(530) 621-5442 Direct
(530) 621-4650 Main