All oversize loads entering the City of Philipsburg, Granite County, must conform to the requirements set by the Montana Department of Transportation (MDT). This includes adherence to all state regulations regarding load size, weight, and securement.

In general, any vehicle exceeding 8 feet 6 inches in width, 13 feet 6 inches in height, and classified as a Class V or higher vehicle should obtain an oversize load permit from the MDT and notify the Philipsburg Public Works Department.

Due to the narrow streets and historic structures in downtown Philipsburg, special considerations are required for loads exceeding 10 feet in width. These loads may require a route survey and approval from the Philipsburg Historic Preservation Commission.

Escort vehicles are typically required in Philipsburg when the load exceeds 12 feet in width, 14 feet in height, or 90 feet in length. Specific requirements depend on the route and time of day.

Local police escorts from the Philipsburg Police Department are mandatory for loads exceeding 14 feet in width or those traversing particularly sensitive areas, such as near the Granite County Museum or the Philipsburg School. Fees for police escorts are typically $75 per hour, with a four-hour minimum. Scheduling requires at least 72 hours' notice.

Permits for oversize loads in Philipsburg require application through the Montana Department of Transportation (MDT) Oversize/Overweight Permitting System. Details and application forms can be found on the MDT website (www.mdt.mt.gov). You must also notify the Philipsburg Public Works Department at (406) 859-3351, ext. 105, after state permit approval.

Documentation requirements include a detailed description of the load, vehicle specifications, proposed route, and proof of insurance. For loads impacting historic areas, a structural assessment may be required.

Time-of-day restrictions are in effect within Philipsburg's business district (Broadway Street) between the hours of 7:00 AM and 9:00 AM, and again from 4:00 PM to 6:00 PM, Monday through Friday, to avoid peak traffic congestion.

Seasonal weight restrictions may be imposed on certain town roads during the spring thaw (typically March-April) to prevent damage to road surfaces. Check with the Philipsburg Public Works Department for current restrictions.

Due to their historic significance and narrowness, certain routes are restricted for oversize loads, particularly those passing through the residential areas south of Broadway Street and near the Opera House. Contact the Public Works Department for approved routes.

MDT permit fees vary based on weight, distance, and dimensions. In addition, the City of Philipsburg charges a local processing fee for oversize load permits.

The local processing fee is tiered based on the complexity of the route and the potential impact on City infrastructure. Loads requiring police escorts will incur additional hourly charges.