Bridge and road weight restrictions in Oregon

Oct. 6, 2025, 7:38 p.m.
Oregon enforces specific weight restrictions on bridges and roadways to ensure safety and preserve infrastructure. Here's an overview of key regulations and notable bridge restrictions:
Bridge and road weight restrictions in Oregon

Statewide Weight Limits

  • Maximum Gross Vehicle Weight (GVW): 80,000 lbs, aligning with federal standards. 

  • Single Axle: Limited to 20,000 lbs.

  • Tandem Axle: Limited to 34,000 lbs.

  • Federal Bridge Formula (FBF): Applies statewide, determining weight limits based on axle spacing and wheelbase. 

Bridge-Specific Restrictions

Certain bridges in Oregon have weight limits that differ from the general state regulations. Here are some examples:

  • Hood River Bridge: Weight limits range from 22 to 32 tons, depending on the truck type. 

  • Oregon City Bridge: Imposed a 14-ton weight limit after structural concerns; large commercial vehicles are restricted. 

  • Sellwood Bridge: Reduced weight limit to 10 tons due to structural deficiencies, affecting daily truck and bus traffic. 

Resources for Truckers

  • ODOT Permit Weight Table 1 (Form 8110): Details legal axle and gross weights for various vehicle configurations. 

  • Bridge and Truck Map: Interactive tool to identify bridge restrictions and plan routes accordingly.

  • Route Map 8: List of state bridges with weight limitations and restrictions. 

Important Notes

  • Permit Requirements: For loads exceeding standard weight limits, obtaining an over-dimensional permit is necessary.

  • Bridge Conditions: Weight restrictions may change due to ongoing inspections and maintenance.

  • Local Variations: Some counties may have additional weight restrictions based on local bridge conditions.