All oversize loads entering the City of Calais must conform to the requirements set by the Maine Department of Transportation (MaineDOT) and the Calais Public Works Department.

In general, any vehicle over 12 feet in width, 14 feet in height, and within the heavy haul weight class (over 80,000 lbs) should obtain an oversize load permit from the Calais Public Works Department.

Calais, being a border city with New Brunswick, Canada, has specific regulations to ensure safe passage of oversized loads on its infrastructure, including St. Croix Avenue and International Avenue.

Escort vehicles are required for loads exceeding 16 feet in width or 18 feet in height on highways within Calais. The escort must be provided by a licensed escort service.

For loads over 20 feet in width, a police escort is mandatory. The Calais Police Department requires a minimum of 48 hours' notice for scheduling a police escort, and there is a fee of $150 per hour, with a minimum charge of 2 hours.

To apply for an oversize load permit in Calais, carriers must submit their application through the Maine Department of Transportation's online permit system or by contacting the Calais Public Works Department directly at (207) 454-2171.

Applicants must provide detailed route information, including entry and exit points, and a map of the intended route through Calais. Documentation of insurance and compliance with Maine's oversize load regulations is also required.

Oversize loads are restricted from traveling during peak hours (7-9 am and 4-6 pm, Monday through Friday) on major highways such as US-1 and Route 9.

Seasonal restrictions apply during the spring thaw (typically late March to early May), where weight limits are reduced on certain roads to prevent damage. Carriers should check with the Calais Public Works Department for specific road conditions.

Certain residential neighborhoods, such as those along River Road, are restricted to oversize loads unless specifically permitted by the City.

The base fee for an oversize load permit in Calais is $50. Additional fees are applied based on the size and weight of the load: $25 for loads over 15 feet wide, $50 for loads over 18 feet wide, and $100 for loads over 80,000 lbs.

For multi-day permits, there is an additional charge of $20 per day. Complex routes or those requiring significant infrastructure adjustments may incur additional fees as determined by the Calais Public Works Department.