Department of Transportation
NDDOT
North Dakota • United States of America
The North Dakota Department of Transportation (NDDOT) manages over 7,200 miles of state highways through America's energy heartland, supporting the massive freight flows associated with the Bakken oil formation and agricultural commodity exports. Key freight corridors include I-29, I-94, and US-2, which serve as the primary east-west and north-south arteries for oil field equipment, grain haulers, and energy sector freight. NDDOT administers oversize and overweight permits essential for the oil industry, manages road closures and weight restrictions due to the significant damage caused by heavy oil field traffic, and provides ND Roads for statewide road conditions.
| Official Website | https://www.dot.nd.gov/ |
|---|---|
| Data API | https://www.dot.nd.gov/business/gis-webservices.htm |
| Founded | 1919 |
| Headquarters | Fargo |
Available Data
Social Media
- @NorthDakotaDOT — NDDOT
North Dakota 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) | 65 ft |
OS/OW Permits
Seasonal Restrictions Apr, May
Spring weight restrictions are posted on state highways and county roads, typically April through May. Spring postings in ND can be significant, particularly in the Red River Valley and other flat agricultural areas where drainage is poor. Oilfield access roads in the Bakken region may have additional restrictions.
Weigh Station Bypass
23¢/gal
Member
Special Exemptions
Notable Rules
North Dakota allows GVW up to 105,500 lbs on designated state routes. The Bakken Formation oil fields in western ND generate intensive heavy haul on oilfield access roads — many of which are county roads with limited weight capacity. I-94 and I-29 are the primary Interstate corridors. Extreme winter conditions (blizzards, wind chill) regularly close roads in winter.
Sources
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