All oversize loads entering the City of Dover, Strafford County, must conform to the requirements set by the New Hampshire Department of Transportation.

In general, any vehicle over 12 feet in width, 14 feet in height, and within the Class B overweight limit (80,000 lbs) should obtain an oversize load permit from the Dover Public Works Department.

Dover requires a permit for any load that exceeds these dimensions or weight, and the permit must be obtained at least 2 business days in advance to ensure processing.

In Dover, escort vehicles are required for loads exceeding 14 feet in width or 18 feet in height. The escort vehicle must be equipped with proper warning lights and flags.

For loads wider than 16 feet or taller than 18 feet, a police escort is required. The Dover Police Department must be contacted at (603) 743-4030 to arrange for an escort, and a minimum of 24 hours' notice is required.

To apply for a permit in Dover, applicants must submit their request through the New Hampshire Department of Transportation's online permit portal or by contacting the Dover Public Works Department at (603) 743-4416.

Documentation required includes the load's dimensions, weight, and route information, as well as proof of insurance and a valid USDOT number.

Oversize loads are not permitted on local roads during peak traffic hours (7-9 am and 4-6 pm, Monday-Friday).

Seasonal restrictions may apply during heavy snowfall or maintenance periods; please check with the Dover Public Works Department for up-to-date information.

Loads exceeding 12 feet in width are prohibited on certain routes, including Silver Street and Central Avenue, due to narrow roadways and tight intersections.

The standard permit fee for oversize loads in Dover is $50, plus an additional $25 for each escort vehicle required.

Additional fees may apply for complex routes or loads that require specialized equipment or review.