All oversize loads entering the City of Costa Mesa, located in Orange County, must conform to the requirements set by the California Department of Transportation (Caltrans).

In general, any vehicle over 12 feet in width, 14 feet 6 inches in height, and within the heavyweight class (over 80,000 lbs) should obtain an oversize load permit from the Costa Mesa Public Works Department.

The City of Costa Mesa adheres to the California Vehicle Code, Section 35780, which mandates that oversize loads obtain permits to operate on public roads within the city limits.

In Costa Mesa, escort vehicles are required for oversize loads exceeding 16 feet in width or 14 feet 6 inches in height. Escort vehicles must be equipped with appropriate warning lights and signage as per the California Highway Patrol (CHP) requirements.

For loads requiring a police escort, arrangements must be made through the Costa Mesa Police Department at least 48 hours in advance. Fees for police escorts vary based on the duration of the escort and the number of officers required.

To apply for an oversize load permit in Costa Mesa, applicants must submit their requests through the Costa Mesa Public Works Department's online portal or by contacting the department directly at (714) 754-5252.

Documentation required includes proof of insurance, detailed route plans, and load specifications. Applicants are advised to review the California Department of Transportation's oversize load permit guidelines to ensure compliance.

Oversize loads are restricted from traveling during peak hours (7-9 am and 4-6 pm, Monday through Friday) in Costa Mesa to minimize traffic disruptions.

During periods of heavy rain or fog, oversize loads may be required to pull over or delay travel until conditions improve, as directed by the CHP or Costa Mesa Police Department.

Certain routes, such as those through residential neighborhoods or areas with low clearance, may be restricted for oversize loads. Permittees are required to plan their routes in accordance with the City's designated truck routes.

The base permit fee for an oversize load in Costa Mesa is $250. Additional fees may apply based on the complexity of the route, the need for escorts, or other special requirements.

For loads exceeding certain dimensions or weights, additional charges will be assessed on a case-by-case basis. Applicants are encouraged to consult with the Public Works Department for a detailed fee breakdown.