All oversize loads entering the City of Issaquah, located in King County, must conform to the requirements set by the Washington Department of Transportation.

In general, any vehicle over 12 feet in width, 15 feet in height, and within the heavy haul weight class (over 80,000 lbs) should obtain an oversize load permit from the Issaquah Public Works Department.

Issaquah has specific regulations regarding oversize loads due to its proximity to major highways and residential areas, requiring careful planning to avoid disruptions.

In Issaquah, escort vehicles are required for loads exceeding 14 feet in width, 16 feet in height, or weighing over 120,000 lbs. Escort vehicles must be equipped with appropriate warning lights and signage.

For oversize loads traveling on state highways, the Washington State Patrol may require additional escort vehicles. It's recommended to coordinate with local authorities for specific requirements.

To apply for an oversize load permit in Issaquah, applicants must submit their request through the Washington State Department of Transportation's online permitting system or contact the Issaquah Public Works Department directly.

Required documentation includes proof of insurance, detailed load information, and route plans. Additional documentation may be required for oversize loads exceeding certain dimensions.

Issaquah has time-of-day restrictions for oversize loads on weekdays during peak commute hours (7-9 am and 4-6 pm). Travel is generally allowed at night or during off-peak hours.

Seasonal restrictions may apply during heavy snowfall or other adverse weather conditions. It's recommended to check with the Issaquah Public Works Department for up-to-date information.

Certain routes through Issaquah are restricted for oversize loads, including residential streets and areas under construction. Permittees must work with the City to identify approved routes.

The standard permit fee for oversize loads in Issaquah is $50, with additional fees based on the complexity of the route and the size of the load.

For oversize loads requiring multiple permits or escorts, a discounted fee structure may be available. Contact the Issaquah Public Works Department for more information on permit fees and payment options.