Kansas Oversize & Overweight Permits

When Kansas needs a permit

Legal to 8'6" wide, 14' high, 80,000 lb on the Interstate, 85,500 lb off it. Over that, a single-trip permit is $40; a superload over 150,000 lb is $200 with a three-day bridge review. Run 12' wide without an escort in daylight; over 14' wide pulls front and rear escorts. Loads over 14' wide are boxed into 8:30 a.m.–4:30 p.m., Monday through Thursday. Standard loads move a half hour either side of daylight.

Thresholds, escorts, and curfews

• Legal max before a permit: Permit needed over 8'6" wide, over 14' high, or over 80,000 lb on the Interstate (85,500 lb on non-Interstate highways), or over legal length.
• Escort / pilot car: Up to 12' wide runs escort-free in daylight; over 14' wide needs one front and one rear escort. Superloads over 150,000 lb need front and rear escorts and may need law enforcement plus an extra escort to slow at bridges. Pole car for over-height loads.
• Superload: Gross over 150,000 lb is a superload: $200 permit, front and rear escorts, and a minimum three-day bridge analysis before issuance. Loads over 16'6" wide or over 18' high also leave the standard permit lane.
• Travel curfew: Standard oversize moves a half hour before sunrise to a half hour after sunset, seven days including holidays. Loads over 14' wide are held to 8:30 a.m.–4:30 p.m., Monday through Thursday. Over-length and over-width loads get no night travel.
• Permit fee: Single-trip $40. Superload (over 150,000 lb gross) $200. Annual/blanket permits also offered through KDOT.

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