Within unincorporated Nevada County there are approximately 2,800 miles of public and private roadways. The Nevada County Department of Public Works Maintains approximately 560 miles under the "County-Maintained Mileage System" and an additional 50 miles under established road maintenance districts. The majority of the remaining roadway mileage is maintained privately. The County does not enforce private road maintenance. If private road maintenance is not working in your neighborhood, options exist to provide for road maintenance.