All oversize loads entering Foster City in San Mateo County must conform to the requirements set by the California Department of Transportation (Caltrans) and Foster City Municipal Code Chapter 10.28.

In general, any vehicle exceeding 8 feet 6 inches in width, 14 feet in height, or exceeding 80,000 pounds gross vehicle weight should obtain an oversize/overweight load permit from the Foster City Public Works Department.

Specifically, loads traveling on Foster City Boulevard, which is a major thoroughfare, require careful route planning and may necessitate additional review due to its proximity to residential areas and the Edgewater Isle Homeowners Association. Ensure your planned route minimizes disruption.

Escort vehicles are typically required in Foster City when the load exceeds 12 feet in width, 16 feet in height, or the overhang exceeds 10 feet. The specific requirements will depend on the planned route and potential impact on traffic flow.

Local police escorts are generally not required within Foster City unless the load presents an extraordinary risk to public safety, such as extreme dimensions or hazardous materials. If a police escort is deemed necessary by the Public Works Department, applicants will be responsible for coordinating with the San Mateo County Sheriff's Office, which provides law enforcement services to Foster City, and covering any associated fees. Scheduling must be done well in advance.

To apply for an oversize/overweight load permit in Foster City, you must submit an application to the Foster City Public Works Department. Applications can be obtained from the City's website (search 'Foster City Oversize Load Permit') or by contacting the Public Works Department directly at (650) 286-3270.

Required documentation includes a detailed description of the load, vehicle configuration, proposed route, and insurance information. For loads exceeding 100,000 pounds, a structural analysis of any bridges or overpasses along the route may also be required. Be prepared to provide axle weights and spacing.

Time-of-day restrictions are in effect in Foster City. Oversize loads are generally not permitted to travel during peak commute hours, which are typically 7:00 AM to 9:00 AM and 4:00 PM to 6:00 PM, Monday through Friday. These restrictions are strictly enforced, especially near schools and residential areas.

There are no specific seasonal restrictions in Foster City, but weather-related restrictions may be imposed during periods of heavy rain or high winds. Check local weather forecasts and advisories before commencing your transport.

Certain residential areas, particularly those with narrow streets and limited access, may be restricted. The Public Works Department will review your proposed route and advise you of any necessary detours. Pay close attention to weight restrictions on the numerous bridges spanning the lagoon system within Foster City.

The base permit fee for an oversize/overweight load in Foster City is $50.00. This fee covers the administrative costs associated with processing the permit application.

Additional fees may be assessed based on the size and weight of the load, the distance traveled within the city limits, and the complexity of the route. Loads requiring special traffic control measures, such as lane closures or temporary signal modifications, will incur additional charges.