Caltrans Chula Vista Maintenance Facility, designated Station #5705 within Caltrans District 11, operates from 570 C Street in Chula Vista's 91910 civic district. The yard supports state-highway maintenance across San Diego County's southern corridor, coordinating roadway repair, signage, and drainage work on segments of SR-54 and I-805 through the same permitting framework that Chula Vista Planning & Building administers for municipal infrastructure projects. Station #5705 underwent fuel-tank upgrades replacing single-fuel aboveground storage with dual gasoline/diesel 10,000-gallon double-walled tanks, and an EVSE installation added electric-vehicle charging infrastructure to the yard under a 2020 CEQA categorical exemption. The facility hosts periodic Caltrans District 11 Dump Day events that accept household waste, mattresses, and tires at no charge, diverting residential debris from Otay Landfill on Maxwell Road. Landscape and erosion-control work along state right-of-way pulls materials from the same regional supply chain that SiteOne Landscape Supply stocks for commercial and municipal hardscape and irrigation projects across the South Bay. Maintenance crews deploy from the C Street yard for pavement rehabilitation, guardrail replacement, and storm-drain clearance across the I-5, I-805, and SR-54 interchanges that define Chula Vista's freeway network.