All oversize loads entering the City of Hamilton, Ravalli County, must conform to the requirements set by the Montana Department of Transportation.

In general, any vehicle over 12 feet in width, 14 feet 6 inches in height, and within the Class 2 weight category (over 80,001 lbs but not exceeding 90,000 lbs) should obtain an oversize load permit from the Hamilton Public Works Department.

The City of Hamilton requires additional documentation for loads exceeding 16 feet in width or 18 feet in height, which may necessitate a detailed route survey to ensure safe passage and compliance with local infrastructure.

Escort vehicles are required in Hamilton for loads exceeding 16 feet in width or 18 feet in height. Escorts must be provided by certified professionals and equipped with appropriate safety gear, including amber lights and communication devices.

For loads that exceed 20 feet in width or require travel during peak hours (7-9 am and 4-6 pm), a police escort may be mandatory. Arrangements for police escorts should be made through the Ravalli County Sheriff's Office at least 48 hours in advance, with fees starting at $150 per hour.

To apply for an oversize load permit in Hamilton, applicants can visit the Hamilton Public Works Department's website or contact them directly at (406) 363-3411. The application requires detailed information about the load, including dimensions, weight, and proposed route.

Documentation requirements include proof of insurance, a detailed route plan, and, for certain oversize loads, a route survey conducted by a certified professional. Applicants are advised to consult with the Public Works Department to determine specific documentation needs.

Hamilton has time-of-day restrictions for oversize loads on weekdays, prohibiting travel during peak hours (7-9 am and 4-6 pm) without a special permit.

Seasonal restrictions apply during heavy snowfall or when road conditions are deemed hazardous by the Hamilton Public Works Department. Loads may be restricted on certain routes during the spring thaw due to road maintenance.

Certain neighborhoods and historic districts in Hamilton have restricted routes for oversize loads to minimize disruption and protect local infrastructure.

The base permit fee for oversize loads in Hamilton is $75. Additional fees are applied based on the size and weight of the load, as well as the complexity of the route. For example, loads requiring a detailed route survey incur an additional $200 fee.

Fees vary by load size and weight category, with Class 2 loads (over 80,001 lbs but not exceeding 90,000 lbs) incurring a $150 fee. Longer routes or those requiring special arrangements may incur additional charges.