Oregon oversize and overweight rules
The short answer
Last checked
Without a permit, a load in Oregon can be up to 8 ft 6 in wide, 14 ft high and 80,000 lb gross, with the conditions in the legal limits table. A pilot car is required for loads over 12 ft wide on two-lane roads, or over 95 ft long on two-lane roads, and a height pole car for loads over 14 ft 6 in high; the start differs on some routes or with some loads, with the conditions in the pilot car table.
Jump to a section
Legal limits without a permit
| Limit | Up to | Roads | Rule |
|---|---|---|---|
| Width | 8 ft 6 in | All roads | ORS 818.080(1), Table I(1) |
| Height | 14 ftThe driver must still check that the route has enough vertical clearance. | All roads | ORS 818.080(1), Table I(2) |
| Length, single truck | 40 ft | All roads | ORS 818.080(1), Table I(3) |
| Length, whole combination | 60 ftRoutes on ODOT’s Group Map 1 and Route Map 7 allow longer combinations, some with no overall limit. | All roads | ORS 818.080(1), Table I(3) |
| Length, semitrailer | 53 ftOnly on Route Map 7 routes and Group 1 highways on Group Map 1, where ODOT’s maps set the overall length. Any auxiliary axle counts in the length. In doubles each trailer is at most 40 feet, and 68 feet from the front of the first to the rear of the second. | Designated truck routes | ODOT form 734-2805 (Attachment 13), Trailer Lengths |
| Length, semitrailer | 40 ftEach vehicle in a combination, the semitrailer included, off the mapped routes. | Roads off the designated routes | ORS 818.080(1), Table I(3) |
| Gross weight | 80,000 lbA divisible load with legal axle weights may go up to 105,500 pounds with an extended weight permit. | All roads | ODOT Permittable Vehicle Dimensions and Weight Tables, Weight Table 1 |
Source: ORS 818.080(1), Table I, ODOT form 734-2805 (Attachment 13), ODOT Commerce and Compliance, Permittable Vehicle Dimensions and Weight Tables page
Axle weight limits
| Axle or group | Without a permit | With a permit | Roads |
|---|---|---|---|
| Any single axle | 20,000 lb | 21,500 lbOnly a single trip permit for a steering axle followed by four or more tandems may go higher, up to 24,000 pounds after special routing and analysis. Unladen self-propelled vehicles on flotation tires have their own limit. | All roads |
| 2 or more axles in a group, spread over 3 ft 4 in to 8 ft | 34,000 lbAny two or more consecutive axles more than 40 and up to 96 inches apart count as a tandem, also inside a longer group. | 43,000 lbOnly a single trip permit for a steering axle followed by four or more tandems may go higher, up to 48,000 pounds a tandem after special routing and analysis. | All roads |
| Gross weight | 80,000 lbA divisible load with legal axle weights may go up to 105,500 pounds with an extended weight permit. | Not set | All roads |
| Per inch of tire width | 600 lb an inchOr the tire maker’s sidewall rating, whichever is less. | 600 lb an inchNever over the tire maker’s sidewall rating. Unladen self-propelled vehicles on flotation tires 15 inches or wider may run at 700 pounds an inch by single trip permit. | All roads |
The Oregon rules on file give no bridge formula for this page to apply to axle groups; the axle table and its source give the group limits. “With a permit” lists the state’s permit figures; read each row’s condition, since some are review thresholds rather than limits.
Source: ORS 818.010 and 818.030, ODOT Commerce and Compliance, Permittable Vehicle Dimensions and Weight Tables page, OAR 734-082-0010 and 734-082-0015
Pilot cars and escorts
Each row is one rule. A load can meet several; the permit lists the escorts for your move.
| Load | Roads | Front | Rear | Height pole | Police | |
|---|---|---|---|---|---|---|
| over 16 ft wideThe permit sets the escortsForm 8101, Minimum Pilot Vehicles Required for Width, More than 16 feet 0 inches | All roads | Set by the permit | 0 | 0 | 0 | 0 |
| over 150 ft longThe permit sets the escortsForm 8101, Minimum Pilot Vehicles Required for Overall Length, More than 150 feet 0 inches | All roads | Set by the permit | 0 | 0 | 0 | 0 |
| over 14 ft 6 in highNot needed when the permittee has filed a declaration with ODOT taking all liability for the overheight move. The permit’s number and placement of pilots take precedence.Form 8101, Notes on Pilot Vehicle Charts | All roads | 1 height pole car | 0 | 0 | 1 | 0 |
| over 8 ft 6 in wideDepends on the route’s Route Map 2 color. Green routes need none up to 12 feet wide; purple routes none until 9 feet 1 inch, then one, and two from 12 feet 1 inch. A red route needs one from 8 feet 7 inches where Group Map 1 marks it blue, two where it marks it red, and none until 9 feet 1 inch where it marks it black; every red route needs two from 11 feet 1 inch. Check your route’s color; the permit’s count takes precedence.The condition says what goes alongForm 8101, Minimum Pilot Vehicles Required for Width, 8 feet 7 inches to 12 feet 0 inches | Two-lane roads | See the source | 0 | 0 | 0 | 0 |
| over 95 ft longOne in front on every two-lane state highway that isn’t a green Route Map 2 route; a green route needs none until 110 feet 1 inch. The permit’s count takes precedence.Form 8101, Minimum Pilot Vehicles Required for Overall Length, 95 feet 1 inch to 110 feet 0 inches | Two-lane roads | 1 in front | 1 | 0 | 0 | 0 |
| over 12 ft wideAt least one, on a green Route Map 2 route; a purple route needs two, front and rear, and on a red route the permit sets the count. The permit’s count takes precedence.Form 8101, Minimum Pilot Vehicles Required for Width, 12 feet 1 inch to 14 feet 0 inches | Two-lane roads | 1 in front | 1 | 0 | 0 | 0 |
| over 14 ft wideAt least two, on a green Route Map 2 route; on purple and red routes the single-trip permit sets the count. The permit’s count takes precedence.Form 8101, Minimum Pilot Vehicles Required for Width, 14 feet 1 inch to 16 feet 0 inches | Two-lane roads | 1 in front, 1 behind | 1 | 1 | 0 | 0 |
| over 110 ft longTwo-lane state highways that are not green Route Map 2 routes need this pilot from 95 feet 1 inch. The permit’s number and placement of pilots take precedence.Form 8101, Minimum Pilot Vehicles Required for Overall Length, 110 feet 1 inch to 120 feet 0 inches | Two-lane roads | 1 in front | 1 | 0 | 0 | 0 |
| over 120 ft longThe permit’s number and placement of pilot vehicles take precedence.Form 8101, Minimum Pilot Vehicles Required for Overall Length, 120 feet 1 inch to 150 feet 0 inches | Two-lane roads | 1 in front, 1 behind | 1 | 1 | 0 | 0 |
| over 14 ft wideThe permit’s number and placement of pilot vehicles take precedence.Form 8101, Minimum Pilot Vehicles Required for Width, 14 feet 1 inch to 16 feet 0 inches | Two or more lanes in your direction | 1 behind | 0 | 1 | 0 | 0 |
| over 120 ft longThe permit’s number and placement of pilot vehicles take precedence.Form 8101, Minimum Pilot Vehicles Required for Overall Length, 120 feet 1 inch to 150 feet 0 inches | Two or more lanes in your direction | 1 behind | 0 | 1 | 0 | 0 |
When you can travel
Holidays
Overwidth loads on Attachment H permits (non-divisible loads, mobile and modular units)
Six holidays. Barred from noon the day before; loads 8 ft 7 in to 14 ft may run on authorized routes in daylight during parts of the window, and loads over 14 ft wide never. 2026: Thanksgiving noon Wed Nov 25 to half hour before sunrise Mon Nov 30; Christmas barred from noon Thu Dec 24, open to 14 ft Dec 25 to Dec 26, barred Sun Dec 27, open again Mon Dec 28; New Year 2027 follows the same pattern, Dec 31 to Jan 4.
Oregon Special Transportation Permit Attachment H; Oregon Travel Restrictions pageDates computed
Weekends
statewide (last Monday in May to first Monday in September, not holiday weekends)
Overwidth loads on Attachment H permits
Summer weekends, last Monday in May to first Monday in September (not holiday weekends). After noon Sat and all day Sun: 8 ft 7 in to 14 ft allowed on all Interstates and on authorized routes east of the Cascades; not allowed on non-Interstates west of the Cascades; over 14 ft not allowed. Long logs, poles and piling over 105 ft: no daylight movement Sat afternoons and Sundays in that season.
Night
Overwidth loads on Attachment H permits
Darkness runs from half hour after sunset to half hour before sunrise. In darkness, 8 ft 7 in to 10 ft wide may use all Interstates and green routes on Route Map 2; 10 ft 1 in to 12 ft, Interstates only (manufactured and modular homes capped at 10 ft); over 12 ft not allowed. Other routes: nothing over 8 ft 7 in.
Cities and rush hour
Portland, Salem, Eugene, Grants Pass, Medford
Overwidth loads on Attachment H permits in Portland, Salem, Eugene, Grants Pass and Medford
Business days 7 to 9 a.m. and 4 to 6 p.m.: 12 ft 1 in to 14 ft not allowed on I-5 between Washington and OR 217, I-5 Exit 24 to 33, or non-Interstates; over 14 ft not allowed anywhere. Loads over 14 ft wide also barred 11 a.m. to 1 p.m. on all highways in these areas. Both directions.
Portland area (I-5 WA to MP 278, I-84 MP 15 to I-5, I-205, US 26 MP 64 to I-405)
Overwidth loads more than 14 ft wide (mobile or modular: over 14 ft base or 15 ft overall)
Portland area (I-5 from Washington to MP 278, I-84 MP 15 to I-5, I-205, US 26 MP 64 to I-405): not allowed Mon to Fri 7 to 9 a.m. and 4 to 6 p.m., both directions.
Every state on one page: holiday, weekend, night and city restrictions by state. For this year’s holiday, see Thanksgiving 2026 restrictions.
Single trip permit fees
Within each kind of fee the largest that fits your load applies, and the kinds add up.
| Fee | When it applies | Amount |
|---|---|---|
| Permit feeForm 735-9973, State of Oregon row, Single-Trip Permit column | Every single trip permit | $8 |
| Road use assessment feeODOT RUAF page, What is RUAF | over 98,000 lb gross | Not computed here, see the source |
Source: ODOT form 735-9973 (revised 07-2026), State of Oregon single trip fee, ODOT RUAF page, What is RUAF and Rules Summary (ORS 818.225, OAR 734-082-0003)
Where to apply
Oregon issues permits through Oregon Trucking Online (TOL). Start from the agency’s permit page, which leads to it.
What the rules don’t say
Where the sources are silent or say two things. Ask the state before you rely on these.
Legal limits
- The load on any one vehicle may be at most 40 feet long, though a semitrailer’s load may extend up to 5 feet past the rear of the trailer if it stays behind the cab.
- Overall combination lengths by route are set on ODOT’s Group Map 1 and Route Map 7; check your route on them.
- Oregon’s overwidth travel time bands start at 8 feet 7 inches, and loads over 8 feet 6 inches may not move in bad weather.
Axle weights
- ORS 818.010(3), Table III, limits every axle group by the distance between its first and last axles in Oregon’s own figures, which cap two and three axle groups below the federal bridge formula. Check your groups against it.
- Table III measures spans to the nearest foot, rounding a half foot up, so three axles up to 8 feet 5 inches apart may be held to 34,000 pounds.
- Tandem axles are two or more consecutive axles more than 40 and up to 96 inches apart, measured from first to last.
- Any one wheel may carry at most 10,000 pounds.
- Two consecutive tandems may carry 34,000 pounds each at 30 feet or more apart (on the Interstate under 36 feet, by permit), and four axles 70,000 at 35 feet. Idle reduction gear and some fuel types get small allowances.
- Divisible loads with legal axle weights may reach 105,500 pounds gross under an extended weight variance permit.
- Permit weight tables are set by wheelbase formulas and assigned on the permit; continuous trip permits are capped at 98,000 pounds. Confirm the table your permit assigns.
- A combination with a steering axle and four or more tandems may reach 24,000 pounds an axle and 48,000 a tandem after special routing and analysis. Above Permit Weight Table 5, ODOT’s Bridge Section reviews the move.
- ODOT’s rules and permit page don’t state a superload weight; the Bridge Unit reviews loads above Table 5 on request, in up to five business days.
- Road authorities may restrict weights by order or posting, including seasonally.
Pilot cars and superloads
- On two-lane state highways, pilot counts depend on the route’s color on Route Map 2. Routes that aren’t green need one from 95 feet 1 inch long. By width, purple routes need one from 9 feet 1 inch and two from 12 feet 1 inch; red routes need one or two from 8 feet 7 inches by their Group Map 1 marking (none until 9 feet 1 inch where it’s black), and two from 11 feet 1 inch. Check your route’s color.
- Over 16 feet wide or 150 feet long, the single-trip permit sets the pilots. ODOT’s district guidelines name minimums for these loads, such as two rear pilots on multilane highways.
- Front overhang over 15 feet needs one pilot vehicle on two-lane state highways.
- Mobile and modular units up to 14 feet base width and 16 feet overall may have different counts on multilane highways, and county roads follow the permit.
- Over 12 feet wide, certified flaggers or a certified rolling stop with three pilot vehicles are required at listed structures.
- ODOT’s superloads page doesn’t define a superload by size or weight; ODOT monitors such moves and bills their costs.
- ODOT’s pilot vehicle chart doesn’t state a police escort line.
- The pilot counts come from ODOT’s pilot vehicle chart (form 8101), not rule text; the permit’s count takes precedence.
Permit fees
- Non-divisible loads over 98,000 pounds also pay a road use assessment fee by gross weight, axle count and Oregon miles, at 10.9 cents per equivalent single axle load mile.
- ODOT’s fee page and its current chart disagree on how far the road use fee table runs; the chart, to 900,000 pounds, is the one in use.
- Loads of 98,000 pounds or less pay the weight-mile tax instead, and need a temporary pass or weight-mile tax enrollment.
- County and city roads add their own fee, from $0 to $8, only if the route uses them. Permit service fees and ODOT’s monitoring or utility costs on superloads are extra.
- The $8 comes from the July 2026 permit form; confirm current fees with ODOT before quoting.
- A 2025 law (HB 3991) lowers the road use rate to 7.9 cents from July 1, 2029.
Where to apply
- Start from ODOT’s Commerce and Compliance permit page and confirm which online system currently takes applications.
Questions about Oregon
- When do I need an oversize permit in Oregon?
- Without a permit, a load in Oregon can be up to 8 ft 6 in wide, 14 ft high and 80,000 lb gross, with the conditions in the legal limits table. Loads past these figures generally need a permit from the state; see the legal limits table for the exceptions and for length, which depends on the vehicle.
- How much does an Oregon oversize permit cost?
- On the fee schedule we checked, a single trip permit starts at $8. Some charges are not computed here; the fee table names them. The estimator on this page adds up the fees for your load.
- When do you need a pilot car in Oregon?
- A pilot car is required for loads over 12 ft wide on two-lane roads, or over 95 ft long on two-lane roads, and a height pole car for loads over 14 ft 6 in high; the start differs on some routes or with some loads, with the conditions in the pilot car table. How many cars, and whether they lead or follow, depends on the road; the pilot car table lists each rule.
- When can oversize loads travel in Oregon?
- At night: Darkness runs from half hour after sunset to half hour before sunrise. In darkness, 8 ft 7 in to 10 ft wide may use all Interstates and green routes on Route Map 2; 10 ft 1 in to 12 ft, Interstates only (manufactured and modular homes capped at 10 ft); over 12 ft not allowed. Other routes: nothing over 8 ft 7 in. This applies to overwidth loads on Attachment H permits. Rush hour and city curfews also apply; they are listed on this page.
- Can oversize loads move on holidays in Oregon?
- Six holidays. Barred from noon the day before; loads 8 ft 7 in to 14 ft may run on authorized routes in daylight during parts of the window, and loads over 14 ft wide never. 2026: Thanksgiving noon Wed Nov 25 to half hour before sunrise Mon Nov 30; Christmas barred from noon Thu Dec 24, open to 14 ft Dec 25 to Dec 26, barred Sun Dec 27, open again Mon Dec 28; New Year 2027 follows the same pattern, Dec 31 to Jan 4. This applies to overwidth loads on Attachment H permits (non-divisible loads, mobile and modular units).
Sources
- ODOT Permittable Vehicle Dimensions and Weight TablesODOT Commerce and Compliance, Permittable Vehicle Dimensions and Weight Tables pageOregon Department of Transportation, Commerce and Compliance Division. Read .
- ODOT, Vehicle and Cargo Length, Width and Height Limits: Oregon Revised Statutes (ORS 818.080 Table I)ORS 818.080(1), Table IOregon Department of Transportation (reprinting the Oregon Revised Statutes). Read .
- ODOT form 734-2805: Provisional Extended Weight Permit, Attachment 13ODOT form 734-2805 (Attachment 13)Oregon Department of Transportation, Commerce and Compliance Division. Read .
- Oregon Revised Statutes, Chapter 818: Vehicle LimitsORS 818.010 and 818.030Oregon State Legislature, Legislative Counsel Committee. Read .
- Oregon Revised Statutes, Chapter 801: General Provisions and Definitions for Oregon Vehicle CodeORS 801.135 and 801.520Oregon State Legislature, Legislative Counsel Committee. Read .
- Oregon Administrative Rules, Division 734-082: Variance permits issued for non-divisible loadsOAR 734-082-0010 and 734-082-0015Oregon Department of Transportation (published by the Secretary of State, Archives Division). Read .
- ODOT Form 735-8101, Route Map 2 Designations List and Legend (Minimum Pilot Vehicles Required for Width, Overall Length, Height and Front Overhang)ODOT Form 735-8101 (5-26), Route Map 2 LegendOregon Department of Transportation, Commerce and Compliance Division, Over-Dimension Permit Unit. Read .
- ODOT Commerce and Compliance Division form 735-9973, CCD Administrative Fees for Over-Dimension PermitsODOT form 735-9973 (revised 07-2026), State of Oregon single trip feeOregon Department of Transportation, Commerce and Compliance Division. Read .
- ODOT Road Use Assessment Fee (RUAF) pageODOT RUAF page, What is RUAF and Rules Summary (ORS 818.225, OAR 734-082-0003)Oregon Department of Transportation, Motor Carrier Transportation Division. Read .
- ODOT form 9926-2024, Oregon Road Use Assessment Fees, Cents Per MileODOT form 9926-2024, rate chart effective January 1, 2024Oregon Department of Transportation, Commerce and Compliance Division. Read .
- Oregon Department of Transportation page naming the permit systemOregon Department of Transportation, permit system pageOregon Department of Transportation. Read .
Found something wrong or out of date? Report an error to hello@thirteensix.com.
This page is a dated summary in our own words, not legal advice. The permit the state issues governs your move, and states change their rules; check with Oregon before you travel.
Bordering states
- Crossing into California? See California rules
- Idaho, coming soon
- Nevada, coming soon
- Washington, coming soon
More guides: all states and the rules library.
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