Oversize-Overweight Permits

Spring Thaw and Class II roadway restrictions begin in Zones 1 and 2 on Monday, March 9, 2026, at 12:01 AM CDT. Spring Thaw and Class II roadway restrictions were already in place in Zones 3, 4, and 5.

Posted Road restrictions begin in Zones 1, 2, and 3 Monday, March 9, 2026, at 12:01 PM CDT. Posted Road restrictions were already in place in Zones 4 and 5.

Visit the Seasonal weight restriction page for more information.

• Notice: Emergency load restrictions have been put into place on the Hwy 53 bridge and its approach roadways in Duluth. View the Traffic Impact news release for more information concerning this restriction. Oversize/Overweight movement of WB I-535 (Blatnik Bridge) to SB I-35 will be restricted until Fall of 2025. Detour is Bong Bridge on Hwy 2 to the south.
• OS/OW Application and Information
• WINNDOT cross-border permit Application and Information (Currently not available)
• Contact a commercial permit service
• Mail
• Drop-Box (Madison)

Permit information and requirements

• Determine if a permit is required
• Single trip permit information
• Multiple trip permit information
• Sign up for OSOW permit updates
• Implements of Husbandry (IoH) information
• Hours of operation for permitted vehicles
• Escort, lighting, flagging and signage requirements
• Trans 252 - Escort vehicles
• Wisconsin Statute Chapter 348 - Vehicles - size, weight and load law
• OSOW YouTube channel
• List of County highway commissioners

Forms and applications

• Oversize-overweight forms and applications

Weight restriction program

• Weight restriction programs include frozen road declaration, seasonal posted roads and class II roads

Seasonal weight exemptions

• Frozen road exemption for unpeeled forest products, abrasives or salt
• Section 348.175 Wis. Stats.
• Seasonal harvest exemption, section 348.17(5) Wis. Stats.
• Seasonal manure exemption, section 348.17(6) Wis. Stats.

Emergency permits, declarations and exemptions

• No current declarations

Bridge information for routing purposes

• Bridges with height clearances less than 16'-03"
• Bridge heights less than legal on Wisconsin highways
• Bridges with weight-postings on Wisconsin highways
• Weight Restricted Bridges (Includes Emergency Vehicle Weight Limits)
• Highway Structures Information System (HSIS)

Motor carrier enforcement and truck safety

• Hours-of-service regulation (U.S. DOT website)
• Motor Carrier Safety Assistance Program (MCSAP)
• Motor carrier enforcement
• Safety and Weight Enforcement Facilities (SWEF)
• Wisconsin State Patrol home page
• Wisconsin State Patrol Permit Support Request

Maps and publications

• Michigan Permit Border Allowance and Timber Routes Map
• Map of Wisconsin roundabouts, Restricted Crossing U-Turns and Diverging Diamond Intersections (DDIs)
• Official Wisconsin highway map
• Official state trunk highway system maps
• Winter road conditions
• Wisconsin Commercial Driver’s Manual
• Wisconsin long truck operators map
• Work zones and detour information
• Work zones all states (Federal Highway Administration)

Related links:

• 511 Wisconsin Travel Information
• Minnesota DOT oversize/overweight permits
• Motor carrier credentials
• Motor carriers and trucking

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