OR state page · Last reviewed 2026-05-25

Oregon Truck Weight Limits and Permit Sources

Oregon truck weight, ODOT commerce permit, and seasonal/special restriction reference with official source tracking.

At-a-glance summary

Field Value Source Status Confidence
Gross Federal Interstate gross limit is 80,000 lb; Oregon-specific limits are in the FHWA state law compilation linked here. inferred from official source medium
Single axle Federal Interstate single-axle limit is 20,000 lb; Oregon-specific limits are in the FHWA state law compilation linked here. inferred from official source medium
Tandem axle Federal Interstate tandem limit is 34,000 lb; Oregon-specific limits are in the FHWA state law compilation linked here. inferred from official source medium
Bridge formula Federal bridge formula checks apply on Interstate routes; verify state exceptions and permit conditions before movement. inferred from official source medium
Permit agency Oregon Department of Transportation confirmed high
Seasonal / frost Oregon publishes over-dimension permit and restriction information through ODOT; no separate statewide frost-law figure was confirmed. needs review medium
Fine source Official fine structure not confirmed in this review. not found in official review low

Field-level reference data

Regular weight limits

Gross vehicle weight limit Federal Interstate gross limit is 80,000 lb; Oregon-specific limits are in the FHWA state law compilation linked here. inferred from official source medium
Single axle limit Federal Interstate single-axle limit is 20,000 lb; Oregon-specific limits are in the FHWA state law compilation linked here. inferred from official source medium
Tandem axle limit Federal Interstate tandem limit is 34,000 lb; Oregon-specific limits are in the FHWA state law compilation linked here. inferred from official source medium
Bridge formula applies Federal bridge formula checks apply on Interstate routes; verify state exceptions and permit conditions before movement. inferred from official source medium
Interstate notes Use FHWA Interstate limits together with the state source and any permit conditions. inferred from official source medium
Non-Interstate notes Use the reviewed state source and local postings for non-Interstate operation. inferred from official source medium

Axle and loading notes

Steer axle notes Steer axle review should include axle law, tire/equipment ratings, registration, and route postings. inferred from official source medium
Drive axle notes Drive axle groups should be checked against tandem/group limits and permit terms. inferred from official source medium
Trailer tandem notes Trailer tandem position changes distribution and may affect spacing-sensitive checks; re-weigh after adjustment. inferred from official source medium
Fifth wheel notes Fifth-wheel movement redistributes weight but does not create permit authority. inferred from official source medium
Bridge law notes Check FHWA bridge formula and the state source when axle spacing is close to a limit. inferred from official source medium

Oversize / overweight permits

Permit agency Oregon Department of Transportation confirmed high
Permit office name ODOT Commerce and Compliance / Over-Dimension Permits confirmed high
Official permit URL ODOT over-dimension permits page. confirmed high
Online permit portal Use ODOT's official over-dimension permit source for current permit access. inferred from official source medium
Permit contact Use ODOT Commerce and Compliance contacts from the official source. inferred from official source medium
Permit notes Permit terms, route conditions, dates, and vehicle configuration should be checked on the official permit source before travel. inferred from official source medium

Seasonal and special restrictions

Frost / seasonal restriction Oregon publishes over-dimension permit and restriction information through ODOT; no separate statewide frost-law figure was confirmed. needs review medium
Seasonal weight notes Use ODOT permit and restriction materials for current route-level restrictions; a single statewide frost-law weight page was not confirmed in this review. needs review medium
Official seasonal URL ODOT over-dimension permit and restriction source. needs review medium

Fines and enforcement

Overweight fine structure Official fine structure not confirmed in this review. not found in official review low
Overweight ticket notes Use the actual citation, current statute, and permit terms before estimating penalties. not found in official review low
Enforcement agency Official enforcement agency page not confirmed in this review. not found in official review low
Fine official URL not found in official review low
CSA / safety notes CSA impact depends on inspection and reporting; use FMCSA SMS materials and the actual inspection record. inferred from official source medium

Scale notes

Public scale notes A public scale ticket is a self-check record, not state permit authority. inferred from official source medium
Weigh station / enforcement notes Compare scale readings with official limits, route postings, and any permit terms. inferred from official source medium
CAT Scale disclaimer CAT Scale tickets are private self-check records and do not replace official permits or enforcement decisions. inferred from official source medium
Scale ticket notes Use steer, drive, trailer, and gross readings to compare against official limits before travel. inferred from official source medium

Oregon’s weight review has fewer confirmed fields than some states. ODOT Commerce and Compliance handles over-dimension permits, but no separate enforcement agency page was confirmed in this review, and no official fine schedule was confirmed either. Oregon does publish over-dimension permit and restriction information through ODOT, so the permit side is the most complete part of this page. Oregon is also notable for its seasonal restrictions — the state publishes permit and over-dimension restriction information through ODOT, and those materials can include route-level seasonal conditions.

Reading the Oregon weight table

Weight rows use the federal Interstate baseline and the FHWA state law compilation for Oregon. I-5 and I-84 are major freight corridors. Federal baseline applies on those routes. For US highways and state routes — particularly logging routes and routes serving Oregon’s significant agricultural and timber industries — verify the FHWA state law compilation and any permit conditions.

Oregon’s terrain includes mountain passes and coastal routes where route-specific conditions and bridge restrictions can be significant. Current ODOT conditions and permit materials are the right reference for those segments.

Permit and route authority in Oregon

ODOT Commerce and Compliance / Over-Dimension Permits handles over-limit permits for Oregon. Applications go through ODOT’s current permit system. Oregon permit terms cover route, dates, vehicle configuration, and any restrictions specific to the approved move. Changes to equipment or routing require permit review. Oregon’s permit process reflects the state’s significant oversize move volume from timber and construction industries.

Seasonal, route, and local checks

Oregon publishes over-dimension permit and restriction information through ODOT, and those materials can include route-level seasonal conditions. No statewide frost-law weight restriction in the traditional sense was confirmed, but Oregon’s mountain passes and certain rural routes do have seasonal or weather-related restrictions. Checking ODOT’s current permit and road condition materials for the specific route is the right step for moves through mountain corridors.

Tickets and enforcement notes

No enforcement agency page was separately confirmed in this review, and no official fine schedule was confirmed. For any citation in Oregon, the specific Oregon statute cited on the violation notice and any court or agency instructions are the starting points. Working from the actual citation document is essential given the absence of confirmed enforcement and fine sources on this page.

Source-strength notes for Oregon

This page draws from 5 source records. Coverage spans 3 high-confidence, 23 medium-confidence, and 3 low-confidence fields. Permit agency fields are well-supported. Enforcement and fine fields are unconfirmed — a significant gap for citation-related situations. The absence of those sources reflects what was found in this review, not necessarily a gap in Oregon’s actual enforcement structure.

Building an Oregon source file

An Oregon dispatch file should include ODOT permit documentation, current scale ticket, approved route, and any current ODOT route condition notes for mountain or coastal segments. The axle weight table, permit office list, seasonal restrictions, and overweight fines pages support multi-state Pacific Northwest planning.

How to Read a CAT Scale Ticket covers ticket reading. How to Slide Tandems covers distribution. Bridge Formula Explained covers bridge spacing on Oregon’s mountain routes.

FAQ

Where should I verify Oregon permit requirements?

Use the official ODOT Commerce and Compliance / Over-Dimension Permits source linked on this page before moving over legal size or weight.

Are Oregon seasonal restrictions fully confirmed here?

The linked official source should be checked for current seasonal, route, or permit restrictions.

Do these weight values cover Oregon non-Interstate roads and state highways?

The values shown are the federal Interstate baseline. State-specific non-Interstate limits are in the FHWA state law compilation linked here and may differ from the baseline.