Department of Transportation
ALDOT
Alabama • United States of America
The Alabama Department of Transportation (ALDOT) oversees the planning, construction, and maintenance of over 11,000 miles of highways and bridges across the state. Established in 1911, ALDOT plays a vital role in supporting Alabama's freight and trucking industry by maintaining safe routes along major corridors including I-20, I-65, I-85, and US-280. The department operates a statewide traffic management system and coordinates with the Federal Highway Administration to ensure compliance with safety and infrastructure standards critical to commercial carriers.
| Official Website | https://www.dot.state.al.us/ |
|---|---|
| Data API | https://algotraffic.com/ |
| Founded | 1911 |
| Headquarters | Birmingham |
Available Data
Social Media
- @AlgoTraffic — algotraffic
Alabama Trucking Regulations
Size & weight limits, OS/OW permits, and seasonal restrictions for commercial vehicles
Weight Limits
| Category | Limit |
|---|---|
| Max Gross Vehicle Weight | 80000 lbs |
| Single Axle | 20000 lbs |
| Tandem Axle | 34000 lbs |
Dimensional Limits
| Category | Limit |
|---|---|
| Max Height | 13.5 ft |
| Max Width | 8.5 ft |
| Max Length (Single Unit) | 40 ft |
| Max Length (Combination) | 65 ft |
OS/OW Permits
Weigh Station Bypass
29¢/gal
Member
Special Exemptions
Notable Rules
Alabama is a key Southeast freight corridor connecting I-65 (north-south), I-20/59 (east-west), and I-85. The Port of Mobile on the Gulf Coast is a significant freight gateway for bulk commodities. No spring weight restrictions due to warm climate.
Sources
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