Oregon Oversize / Overweight Permit Requirements
Legal-without-permit dimension limits, escort and pilot car thresholds, height pole rules, daylight-only windows, and holiday restrictions for Oregon oversize moves.
Legal limits without a permit
In Oregon, you can move a load without an OSOW permit up to these dimensions on the Interstate and designated highways. Anything over the limits requires a permit (and may require escorts — see below).
| Dimension | Without a permit | Permit required when |
|---|---|---|
| Width | 8′6″ (federal limit) | Anything wider |
| Height | 13′6″ | Anything taller |
| Combo length | 75′0″ | Anything longer |
| Gross weight | 80,000 lb | Anything heavier |
Escort and pilot car thresholds
When permitted, the following escort or movement-restriction rules apply in Oregon. Thresholds are conservative — your specific permit conditions may impose tighter limits depending on the route.
| Trigger | Dimension | Threshold | Detail |
|---|---|---|---|
| Height pole | Height | 14'6" | Lead pilot must carry height-clearance pole for loads exceeding 14'6". Pilot or signed operator declaration required on all state highways (OAR 734-075-0035). |
| Rear pilot car | Width | 14'0" | Rear pilot required on Interstate and 4-lane highways for widths over 14'. Lead+chase configuration required on all routes at higher widths (OAR 734-082-0035). |
| Front pilot car | Width | 12'0" | Front pilot required on 2-lane Green Route highways for widths exceeding 12' (OAR 734-082-0035). |
| Front pilot car | Width | 9'0" | On designated Purple and Route Map 2 routes, escort required at widths over 9'. Conservative threshold — check route-specific permit conditions (OAR 734-082-0035). |
| Daylight-only movement | Width | 8'6" | Non-divisible overwidth loads restricted to daylight movement per Permit Attachment H. Loads over 8'6" wide prohibited from noon preceding holiday to 1/2 hr before sunrise following holiday (OAR 734-082-0060). |
| Weekend / holiday restriction | Width | 8'6" | Loads over 8'6" prohibited Memorial Day, Independence Day, Labor Day, Thanksgiving, Christmas, New Year's (observed). Sat PM + all-day Sun restricted for loads over 105' long during Memorial Day–Labor Day season (OAR 734-082-0060). |
Stop tracking these rules by hand.
OverSizeTMS encodes the per-state escort and dimension rules for every state plus DC. Enter the load dimensions and route, and the platform tells you which permits, escorts, and time windows apply automatically.
See how it works →Last updated 2026-06-06. Cross-checked against the state admin code.