All oversize loads entering Garnavillo, Clayton County, must conform to the requirements set by the Iowa Department of Transportation.

In general, any vehicle over 12 feet in width, 14 feet in height, and within the Class 3 weight category (over 80,001 lbs but not exceeding 90,000 lbs for divisible loads, and up to 120,000 lbs for indivisible loads with a superload permit) should obtain an oversize load permit from the Garnavillo Public Works Department.

The City of Garnavillo requires that all oversize loads follow designated routes to minimize disruptions to local traffic and infrastructure. Permits are issued based on the specific route planned for the oversize load.

In Garnavillo, escort vehicles are required for oversize loads that exceed 14 feet in width or 18 feet in height. Escort vehicles must be equipped with appropriate warning lights and signage as per Iowa DOT regulations.

For loads exceeding 16 feet in width or over 120 feet in length, a police escort may be required. The Garnavillo Police Department must be contacted in advance to arrange for an escort, and fees will be charged according to the department's rate schedule.

To apply for an oversize load permit in Garnavillo, applicants must submit their request through the Iowa Department of Transportation's online permitting system or by contacting the Garnavillo Public Works Department directly.

Applicants must provide detailed information about the load, including its dimensions, weight, and the planned route through Garnavillo. Documentation may include route surveys and certificates of insurance.

Garnavillo has time-of-day restrictions for oversize loads; typically, they are not allowed to travel during peak hours (7-9 am and 4-6 pm) on weekdays.

Seasonal restrictions may apply during periods of extreme weather, such as heavy snow or flooding, which may necessitate additional precautions or route changes.

Certain local roads and bridges may have weight or size restrictions; permits will be issued with specific route guidance to avoid these areas.

The standard permit fee for oversize loads in Garnavillo is $50, with additional fees based on the complexity of the route and the need for escort services.

For superloads (over 120,000 lbs), an additional fee of $200 is charged, along with costs associated with route surveys and any necessary infrastructure reinforcement.