Department of Transportation
ODOT
Oregon • United States of America
The Oregon Department of Transportation (ODOT) manages over 7,900 miles of state highways connecting the Pacific Coast to the interior Northwest and facilitating major freight flows through Pacific ports. Key corridors include I-5 (a critical north-south freight artery), I-84, I-82, and US-97. Oregon's Port of Portland handles significant grain, vehicle, and container exports. ODOT administers commercial vehicle permits, enforces size and weight regulations, and manages the TripCheck.com system for real-time road conditions, weather alerts, and chain controls essential for truckers on mountain passes like the I-84 corridor through the Columbia River Gorge.
| Official Website | https://www.oregon.gov/odot/ |
|---|---|
| Data API | https://apiportal.odot.state.or.us/apis |
| Founded | 1913 |
| Headquarters | Portland |
Available Data
Social Media
- @OregonDOT — OregonDOT
Oregon Trucking Regulations
Size & weight limits, OS/OW permits, and seasonal restrictions for commercial vehicles
Weight Limits
| Category | Limit |
|---|---|
| Max Gross Vehicle Weight | 105500 lbs |
| Single Axle | 20000 lbs |
| Tandem Axle | 34000 lbs |
Dimensional Limits
| Category | Limit |
|---|---|
| Max Height | 14 ft |
| Max Width | 8.5 ft |
| Max Length (Single Unit) | 40 ft |
| Max Length (Combination) | 68 ft |
OS/OW Permits
Seasonal Restrictions Nov, Dec, Jan, Feb, Mar, Apr
Chain controls apply on Cascade mountain passes from approximately November through April. Spring weight restrictions are posted on some state highways and county roads. The Columbia River Gorge corridor (I-84) can experience extreme wind events year-round that affect high-profile vehicles.
Weigh Station Bypass
38¢/gal
Member
Special Exemptions
Notable Rules
Oregon imposes a Weight-Mile Tax (WMT) on trucks over 26,000 lbs operating on Oregon roads — this is separate from IFTA and requires carrier registration with ODOT Motor Carrier Transportation. Oregon allows GVW up to 105,500 lbs on designated state highways. Combination vehicle length limit of 68 ft is higher than most states. The Columbia River Gorge (I-84) has high-wind restrictions for empty trailers.