Under Section 2121 of the California Streets and Highway Code, every county is required to certify their maintained mileage to the state annually in May. In turn, the state is required to certify public maintained road mileage to the FHWA by June 1.
Due to the construction of new county streets in subdivisions, the installation of authorized gates, road abandonments, and the use of more accurate measuring devices, the number of road miles maintained by the Yolo County Department of Planning and Public Works has historically fluctuated over time. Public Works staff periodically updates the county’s maintained mileage database to account for these changes. Not included in the total maintained road mileage are state highways, roads within the county’s right of way that are not maintained by the county, and those maintained by a city under a maintenance agreement.
On May 1, 2012, the Board of Supervisors certified the 2011 maintained mileage as 758.981 miles. Due to corrections following field measurements, 757.513 miles of roadways will be reported as the 2012 certified maintained mileage for Yolo County. Only 116.411 miles of the paved roads are classified as Other Principal arterial, Minor Arterial or Major Collector, and are eligible for federal funds (15% of the total maintained miles.)
Maintained mileage is a factor in a variety of apportionment formulas used to distribute federal and state funds. At the federal level, federal-aid lane miles are used to apportion state shares of the National Highway System Program, the Surface Transportation Program, and the Highway Safety Improvement Program. In turn, the state makes portions of these program funds available to the county, via either formula, or competitive grant processes.
The Sacramento Area Council of Governments (SACOG) also uses the maintained mileage data, along with traffic volume information supplied in the county’s Highway Performance Monitoring System (HPMS) reports, to determine air quality requirements and regulations for this region. |