The Department is responsible for the maintenance and operation of 1,015 miles of County maintained roads, 137 bridges, and numerous related features including: surface drainage facilities, traffic control signs and signals, and pavement markings. We handle land development applications that impact our County roads, issue transportation and encroachment permits, oversee two County airports - Round Valley and Little River Airports, and manage County solid waste operations and closed landfills. Our Surveyor office provides maps, legal description review and other services. We also oversee the Mendocino County Water Agency.