How to read an Alaska oversize permit
Alaska permits are issued by DOT&PF's Commercial Vehicle Customer Service Center through SWOOP at akswoop.com, and the rules for driving them are in the state's Administrative Permit Manual. Alaska writes routes by highway name (Glenn, Parks, Dalton) rather than number, and an exact route is only required for loads over 14 feet wide, 16 feet 6 inches high, 150 feet long, or overweight.
Issued by the Alaska Department of Transportation and Public Facilities, Division of Measurement Standards and Commercial Vehicle Compliance (Commercial Vehicle Customer Service Center) through SWOOP (State-Wide Oversize Overweight Permitting) at akswoop.com. Written from DOT&PF's published rules; we haven't read a real Alaska permit yet.
How to read the route
On the state's sample, the route is a list of road names in driving order, joined by dashes: 'Industry Way - Huffman - New Seward - Tudor - Muldoon - Glenn - Parks - Peger Rd - Johansen - Steese - Elliott - Dalton'. Each name is the next road you take. Highways are named, not numbered, so 'Glenn' means the Glenn Highway. The form says an exact route must be given for widths over 14 feet, lengths over 150 feet, heights over 16 feet 6 inches, and all overweight moves, so a smaller oversize permit may show only the origin and destination. When a route is on the permit, the manual says to use it with no exceptions unless the permit office approves a change.
Road names on Alaska permits
| On the permit | Means |
|---|---|
| Glenn | Glenn Highway. The manual also writes 'Glenn Hwy.' and gives spots on it by milepost, like 'MP 0-27'. |
| Parks | Parks Highway |
| New Seward | The New Seward (Highway) in Anchorage, written by name only on the state's sample route |
| Dalton | Dalton Highway. The manual places points on it by milepost, like 'Coldfoot (MP 175) on the Dalton Highway'. |
| Steese - Elliott | Steese Highway, then Elliott Highway. The manual uses these names for the roads north and east of Fairbanks. |
| MP 414 Dalton Highway | Milepost 414 on the Dalton Highway, used as the destination on the state's sample |
Where the route starts and ends
The state's application form says origin and destination must list an exact address, cross streets, or mileposts. Its sample starts at a street address in Anchorage ('11900 Industry Way, Anchorage AK') and ends at a milepost ('MP 414 Dalton Highway').
Conditions to watch for
Daylight only for wide loads
Over-width loads move in daylight only, unless they carry the lights and reflective tape the manual's Hours of Darkness section requires, or the permit says otherwise. Source
“restricted to daylight hours only, unless equipped with proper lighting and retroreflective tape”
Weekends
The permit can bar weekend travel: no movement after noon Saturday and none on Sunday. The permit says where and when this applies. Source
“Permits may be issued with weekend restrictions for no movement after noon on Saturday or any time during Sunday.”
Holidays
Oversize and overweight loads stop for Memorial Day, Independence Day and Labor Day, unless the permit allows travel. The stop lasts 84 hours. It starts at noon on the Friday before a Sunday or Monday holiday, or at noon on the Thursday before a Friday or Saturday holiday. DOT&PF's holiday notice adds that loads over 10'6" wide can't move on these holidays on the Kenai Peninsula south of the Potter Weigh Station, or on the Parks, Glenn and Richardson Highways. Source
“For holidays occurring on a Sunday or Monday, movement is restricted for 84 hours beginning at 12:00 pm on the previous Friday.”
Rush-hour areas
When the permit says so, you can't travel inside listed urban areas during peak traffic. The areas are Anchorage, Eagle River, Fairbanks, Juneau, Kenai/Soldotna, Ketchikan and Palmer/Wasilla. Their edges are set by landmarks like weigh stations, not city limits. Source
“Permitted loads are not allowed to travel within these boundary areas during travel restrictions when stated on the permit.”
Pilot cars
By width: one pilot car over 10'6" up to 12', two over 12' up to 14', three over 14' up to 18', four over 18'. By length: one over 85' up to 100', two over 100' up to 150', three over 150'. Over 17' high on any route, you need one pilot car with a height pole (over 16'6" on the Glenn Highway, MP 0 to 27). The permit sets the final number. Source
“Vehicles or loads exceeding 10 feet 6 inches must be accompanied by at least one pilot/escort vehicle on all routes.”
Signs, flags and beacon
Wide loads need an 'OVERSIZE', 'OVERSIZE LOAD' or 'WIDE LOAD' sign on the front and rear. Signs are black letters on yellow, at least 48 by 12 inches. Wide loads also need an amber beacon or light bar you can see from 500 feet. Flags are red or fluorescent orange, at least 16 inches square: on each side over 12' wide, and on all four corners over 14'. Source
“Must have an amber high-intensity rotating, flashing, oscillating, or strobe type beacon or light bar”
Easy to miss
- A permit for a smaller oversize load may not list an exact route. The manual requires the route only on overweight permits and moves over 14 feet wide, 16 feet 6 inches high or 150 feet long. If no route is printed, the origin, destination and conditions are all you get.
- The rush-hour zones aren't city limits. For example, the Anchorage area runs from the Glenn Weigh Stations to the Potter Weigh Station, and the Fairbanks area is bounded by the Ester, Fox and Richardson weigh stations.
- The holiday stop is 84 hours, not one day. For a Monday holiday it starts at noon the Friday before.
Questions
How many pilot cars do I need for a 12 foot wide load in Alaska?
One. The manual requires at least one pilot car for loads over 10 feet 6 inches wide up to 12 feet, and at least two from just over 12 feet up to 14 feet. Your permit can set a different number.
Can I haul an oversize load at night in Alaska?
Over-width loads are daylight only unless they have the lights and reflective tape in the manual's Hours of Darkness section, or the permit allows night travel. Even with night approval, peak-traffic, weekend and holiday restrictions still apply unless the permit says otherwise.
How long is an Alaska single trip oversize permit good for?
Three days, not counting Sundays and designated holiday periods. If the trip is over 400 miles one way, the permit may be issued for five days.
Sources
Your permit is the legal document; follow everything it says. Rules change; check DOT&PF's site before you move.Last checked October 2026.