Missouri Oversize Load Permits & Transport Regulations

• Permit Validity: Oversize permits in Missouri are valid for 7 days.
• Requirement: Permits must be secured before entering the state.
• Single-trip Permits: Required for all oversize/overweight movements.

• Standard Travel: Allowed from 30 minutes before sunrise to 30 minutes after sunset, including weekends.
• Weekend Restrictions: Apply for loads exceeding 14′ wide.
• 24-Hour Movement: Permitted for overweight-only loads up to 112,000 lbs GVW (except in metro/tourist areas).
• Special Logistics Management Considerations: Apply in:
  • St. Louis metro area
  • Kansas City region
  • Springfield city limits
  • Tourist zones (Lake of the Ozarks and Branson)

• Major Holidays: No travel on major holidays or preceding days.
• Weekday Rush Hour Bans: In:
  • St. Louis: 6:30-9:00 AM and 3:30-6:30 PM
  • Kansas City: 7:00-9:00 AM and 4:00-6:00 PM
• Mississippi River Bridge Restrictions: Apply on key routes.
• Tourist Season Limitations:
  • Branson: June 1 – Oct 31
  • Lake of the Ozarks: June 1 – Labor Day

Length:

• 53′ max: On Interstates
• 60′ max: On non-designated highways (>10 air miles)

Width:

• 8’6″: On Interstates
• 8′: On secondary roads

Height:

• 14′: On designated routes
• 13’6″: Elsewhere (must use drop-deck trailer for over-height permits)

Weight Limits:

• Gross: 80,000 lbs
• Single axle: 20,000 lbs (22,000 on secondary)
• Tandem axle: 34,000 lbs (36,000 on secondary)
• Tridem axle: 34,000-42,500 lbs (depending on spacing)

• Length: Up to 150′
• Width: Up to 16′
• Height: Up to 16′ (15′7″ max on some routes)
• Weight Limits:
  • 5 axles: 104,000 lbs
  • 6 axles: 120,000 lbs
  • 7 axles: 130,000 lbs
• Superload Classification: Anything exceeding these dimensions or 160,000 lbs GVW.

Length Escorts:

• 90′: 1 escort (all highways except divided)

Width Escorts:

• 12′4″: 1 escort (2 on non-designated highways)
• 14′: 1 escort on Interstates, 2 on two-lane roads

Height Escorts:

• 15′6″: Route survey + high-pole escort
• Utility bucket trucks may be required for wire lifting.

Signage:

• “Oversize Load” Signs: Required when width exceeds 10′6″ or length exceeds 90′.

Markings:

• Flags: Required at all extreme projections.
• Proper Lighting: Required for night moves.
• Special Compliance Rules: For stretched trailers (must declare used/unused deck space).