• 10-day validity for all oversize/overweight permits
• Permits must be obtained before entering the state
• Seasonal restrictions from Memorial Day to Labor Day
• Superload if:
  • Width >16′ on Interstates
  • Width >14′ on 2-lane highways
  • Height >17′
  • Length >150′
• Annual permits for extended length/weight available ($8)
• Special rules for dozers with detached blades
• Night travel allowed for certain widths on designated routes

Standard Movement:

• Labor Day–Memorial Day: ½ hour before sunrise to ½ hour after sunset (7 days/week)
• Memorial Day–Labor Day:
  • Saturday: Until noon
  • Sunday: No travel (unless ≤14′ wide on designated routes)

Urban Restrictions (Portland, Salem, Eugene, Grants Pass, Medford):

• No travel >12′ wide during 7–9 AM & 3–6 PM
• Additional curfews for widths >14′

Standard Legal Limits:

• Length: 53′ semitrailer (60′ on Group 1 routes)
• Overhang: 5′
• Width: 8’6″
• Height: 14′
• Weight:
  • Single: 20,000 lbs
  • Tandem: 34,000 lbs
  • Tridem: Depends on spacing
  • Gross: 80,000 lbs

Routine Permit Allowances:

• Length: Up to 105′
• Overhang: ≤⅓ of wheelbase
• Width: Up to 16′
• Height: Route-dependent
• Weight:
  • Single: 21,500 lbs
  • Tandem: 43,000 lbs
  • Tridem: 57,600–64,500 lbs (based on spacing)

Interstate/Multi-Lane Highways:

• Length:
  • Over 120′: 1 escort
  • Over 140′: As required by permit
• Width:
  • Over 14′: 1 escort
  • Over 16′: As required by permit
• Height: Over 14’6″: 1 escort

2-Lane “Green” Routes:

• Over 12′: 1 escort
• Over 14′: 2 escorts
• Over 16′: As required

Other 2-Lane Routes:

• Over 9′: 1 escort

Note: Extra restrictions on secondary roads

• Signs:
  • “Oversize Load” front and rear for over-legal width/length
  • Reflectorized signs required for night travel
• Flags: Required at widest points
• Lights (for night travel):
  • Amber forward/intermediate
  • Red rear lights
  • Overhang ≥4′: red light if low visibility
  • Amber warning lights required:
    • Width >10′ on 2-lane roads
    • Width >12′ on multi-lane (unless escorted with 2+ pilot cars)

• Plan routes – account for urban zones and seasonal restrictions
• Apply early for permits – superloads need extra processing
• Coordinate escorts correctly – varies by road type
• Confirm signage and lighting – especially at night
• Consider experienced haulers for complex or large shipments
• Monitor axle weights and spacing – affects legality