Illinois OSOW Permit Guide
Five-day validity. Cook County and toll road limits.
Illinois rules include 24/7 travel for qualifying loads up to 12′ wide, Cook County expressway limits, toll road limits, 13′-6″ legal height, 14′-6″ routine width, 15′ routine height, superload weight thresholds, and escort requirements over 110′ length, 14′-6″ width, or 14′-6″ height.
Illinois permits are valid for five days. Atlantic Unity helps carriers plan Illinois permits, Cook County restrictions, toll road limits, travel windows, legal dimensions, routine limits, escorts, signs, flags, amber lights, and superload engineering review.
Illinois rules include 24/7 travel for qualifying loads up to 12′ wide, Cook County expressway limits, toll road limits, 13′-6″ legal height, 14′-6″ routine width, 15′ routine height, superload weight thresholds, and escort requirements over 110′ length, 14′-6″ width, or 14′-6″ height.
Key restrictions
Illinois rules include 24/7 travel for qualifying loads up to 12′ wide, Cook County expressway limits, toll road limits, 13′-6″ legal height, 14′-6″ routine width, 15′ routine height, superload weight thresholds, and escort requirements over 110′ length, 14′-6″ width, or 14′-6″ height.
Illinois rules include 24/7 travel for qualifying loads up to 12′ wide, Cook County expressway limits, toll road limits, 13′-6″ legal height, 14′-6″ routine width, 15′ routine height, superload weight thresholds, and escort requirements over 110′ length, 14′-6″ width, or 14′-6″ height.