Wisconsin Truck Bans & Hazmat Routes

Where Wisconsin keeps trucks out

Wisconsin bans no trucks from a cars-only parkway. On paper, hazmat follows the Interstates under 49 CFR 397 with no state tunnel ban. On the road, the real limits are local. Legal permit-free size is 8'6" wide and 13'6" high; oversize moves need a permit and get held out of Milwaukee-area freeways at rush hour. Milwaukee posts truck routes under Traffic Code Ch. 101, and Trans 276 sets the long-truck routes. Run the posted route and your true loaded height.

Key restrictions

• Legal permit-free size is 8'6" wide and 13'6" high, with overall combination length up to 75' on designated state highways; anything larger needs an oversize permit and can be held out of Milwaukee-area freeways at rush hour.
• No cars-only parkways; the traps are local weight-posted bridges and streets.
• Follow Milwaukee's posted truck routes (Traffic Code Ch. 101) and the state long-truck route map (Wis. Admin. Code Trans 276) for longer combinations.
• Hazmat runs the Interstates; no Wisconsin tunnel or bridge bans placarded loads.

• Parkway / road ban: No cars-only parkways. Milwaukee County's expressway system restricts oversize and overweight permit loads during rush hours, and cities post their own truck routes.
• Hazmat: No state-designated hazmat tunnel or bridge bans in Wisconsin. Placarded loads default to the Interstates and follow any posted local routing under 49 CFR 397. Milwaukee, Madison, and Green Bay have no hazmat tunnel; the main choke is local weight-posted streets and bridges, not a placard ban.
• Through-truck routes: Cities designate truck routes and post through-truck and weight limits on residential streets (Milwaukee Traffic Code Ch. 101). Longer combinations are held to the state long-truck route network (Wis. Admin. Code Trans 276). A local truck may leave the route for the nearest stop; a through truck stays on the marked route or the freeway.
• Fine: Milwaukee and other city truck-route and weight violations generally run about $50 to $200 as municipal forfeitures; oversize or overweight moves without a valid permit draw larger state fines that scale with the overage.

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