Pennsylvania OSOW permits

Updated: Sep 2

Permits valid for seven days. Must have a permit prior to entering the state.

Pennsylvania permitting system:

Contact phone number: 1-717-787-4680


Sunrise to sunset Monday through Friday, and Saturday sunrise until noon. Overweight only, not exceeding 107,000 pounds and not exceeding 70' overall length, operating at prevailing speeds can have continuous travel.


Daylight only until noon on Saturdays and no Sunday travel. Over 10 feet wide and/or 85 feet in length are not allowed any weekend travel. Inside urban areas (see map included with provision sheets), except for holidays, movement is allowed seven days a week from 9:00 a.m. – 4:00 p.m. and 7:00 p.m. to sunset, and also 3:00 a.m. – 7:30 a.m. (but 2 pilots and special lighting required). A city permit is required for Philadelphia for all routes except Interstates. Permit travel is usually not allowed from noon the day before the six major holidays and holiday weekends until the following weekday. Check with the Sammons Permit Office.


A permit must be ordered in advance if the width is over 10', the length is over 85', height is over 13'6, weight is over 125,000 pounds or any axle weight is over 22,400 pounds. Height over 13'6" is not allowed on the mainline (I-76). Over 11' wide, over 90' long, or over 15' rear overhang requires a pilot car. From Memorial Day to Labor Day, O/D loads can travel between dawn to dusk Monday through Thursday, and dawn to noon on Friday. After Labor Day until Memorial Day, they can travel dawn to dusk Monday through Friday and dawn to noon on Saturday. The gross weight of 80,000 – 100,000 pounds is moderately expensive. Over 100,000 pounds is much more expensive. An Online (Internet) toll calculator is available at PA Turnpike phone number is (717) 939-9551, ext. 2980.


Width: 8'6" on designated highways, 8' on other roads

Height: 13'6"

Length: 53' semitrailer (kingpin to the centerline of rear axle group must not exceed 41'). If the combination is legal without load, no permit is required if the load is 70' or less or if the overall length is 85' or less and the load is non-divisible (no extra length created by multiple end-to-end pieces). No overhang restrictions. This includes beams, utility poles, pipes, building materials, etc.

Overhang: Up to 6' rear overhang allowed on a divisible load. No overhang is legal unless it is a non-divisible load as above.

Weight: 80,000 Steer Axle – 20,000 Single – 20,000 Tandem – 34,000 Tridem – 42,500


Width: 16'

Height: 14'6"

Length: 120', or 160' on 4-lane highways

Weight: Single – 27,000 Tandem – 52,000 Tridem – 63,000 Quad – 72,000 Loads exceeding 201,000 gross weight, width over 16 feet, or 160 feet overall length, are considered super loads.


Width: Over 13' on all highways – 1 escort, over 16' – police escort

Height: Over 14'6" – 1 escort with height pole and PA requires a route survey to accompany the application.

Length: Over 90’ – 1 escort, over 160’ – police escort

Overhang: Over 15' – 1 escort

Note: If both lengths exceed 90' and width exceeds 13', front and rear pilots are required on all two-lane highways.

Weight: Over 201,000 – police escort.

Other: If permit reduced speeds over bridges – 1 escort. If permit requires the load to be the only vehicle on a bridge or to occupy more than one lane of traffic on a bridge – 2 escorts.

Philadelphia: Police escort required when over and of the following: 11'5" wide, 14' high, 75' long, 145,000 pounds.


Dozers with blades that exceed 12' in width, but no wider than 15', maybe hauled if a traffic protector guide rail device is securely fastened to the dozer. A detached bucket or blade cannot be hauled on an overweight load.


"Oversize Load" signs are required on the front of the tractor and rear of the load or trailer (whichever extends the farthest) on all oversized loads unless otherwise specified in the permit. Signs must be removed or covered when the vehicle/load is no longer oversize. Flags are required at the widest points of any oversize load. Rear overhang of 4' or more must be flagged, or have a red light attached to the end of the load during darkness. Headlights and rear lamps of a permitted vehicle must be on during movement when traveling with pilot car(s).

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