Oregon OSOW permits

Updated: Sep 2

Permits valid for 10 days. Must have a permit prior to entering the state.

Oregon permitting system: https://www.oregontruckingonline.com/cf/MCAD/metaEntry/

Contact phone number: 1-503-373-0000 ex. 1


One-half hour before sunrise to one-half hour after sunset seven days a week from Labor Day to Memorial Day. Memorial Day to Labor Day, Saturday travel only until noon and none on Sunday, except not exceeding 14 feet wide can travel weekend, daytime hours only on Interstate highways west of the summit of the Cascade mountains, and on any authorized highway east of the summit of the Cascade Mountains. (See Oregon Attachment H). Up to 10 feet wide on "green" routes and up to 12 feet wide on Interstates are allowed night travel.


In Portland, Salem, Eugene, Grants Pass, and Medford urban areas, on non-Interstate highways, on I-5 in Portland from WA line to the junction of OR217, and in Medford on I-5 between exits 24 and 33, travel not allowed over 12 feet wide from 7:00 to 9:00 a.m. and 3:00 to 6:00 p.m. Over 14 feet wide see provision sheet for additional curfew areas. No permit travel allowed on six major holidays and some holiday weekends. Check with the Sammons Permit Office.


Width: 8'6"

Height: 14'

Length: 53' semitrailer and no overall limit on designated routes. Group 1 routes – 60'

Overhang: 5' Note on trailer lengths: Trailers exceeding 53' in length are not allowed unless they must be stretched for a load, and can be reduced to 53' when unladen, or are in a combination with jeeps or boosters.

Weight: 80,000 Single – 20,000 Tandem – 34,000 Tridem – Depends on spacings


Width: 16'

Height: Depends on routes

Length: 105'

Overhang: Rear overhang not to exceed 1/3 of the wheelbase of the tractor/trailer combination.

Weight: Single – 21,500 Tandem – 43,000 Tridem – Spacing less than 8'6": 57600; at 9': 58,800; at 10': 64,500

Steer – 600 pounds per inch of tire width (13,200 on 11" tires) Loads exceeding 16' wide on the Interstate or 14' wide on 2-lane highways, over 17' high or 150' long are considered super loads, and may take extra time for approval. Over 16' wide not granted on many routes, the district must decide.


On interstate and multi-lane highways:

Width: Over 14' – 1 escort, over 16' – as required on the permit

Length: Over 120' – 1 escort, over 140' – as required on the permit

On 2-lane "green" routes:

Width: Over 12' – 1 escort, over 14' – 2 escorts, over 16' – as required on the permit

Length: Over 105' – 1 escort, over 120' – 2 escorts, over 140' – as required on the permit

Most other 2-lane routes:

Width: Over 9' – 1 escort

Length: Over 95' – 1 escort, over 120' – 2 escorts, over 140' – as specified by permit Extra restrictions and pilot cars are required on a few secondary routes.


Extended length & weight annuals will allow 48' trailers on some limited length highways, including 395 Pendleton to John Day and 25 across Oregon, and divisible loads exceeding 80,000 pounds gross. These can be purchased for $8.00 in person at DMV offices, or permit office can order over the phone for the driver to pick up at a specified DMV office or POE. The dozer blade can be detached and hauled with the dozer on the same trailer if the load would be overweight with or without the blade. The permit must state "dozer with the blade removed and reloaded."


"Oversize Load" are required on the front of the tractor and rear of load or trailer on all wide loads and vehicle/loads over 80' long. The sign must be reflectorized if operating at night. Flags are required on the outermost extremities of all wide loads. Traveling at night with a wide load, the outermost extremities must be illuminated by lamps or marker lights (amber forward and intermediate side markers, red rearward markers). Rear overhang of 4' or more must be marked with a flag or, in darkness or visibility less than 500, with red end load lights. When width exceeds 10' on a two-lane highway or 12' on a multi-lane highway, amber warning lights are required, on the cab, unless operating with a minimum of two pilot cars. See the Oregon provision sheet 82A for specifications.

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