Missouri CMV Compliance Guide
MO DOT regulations for commercial motor vehicles
MoDOT Motor Carrier ServicesOfficial MO DOT websiteOverview
MoDOT Motor Carrier Services and the Missouri State Highway Patrol handle commercial vehicle enforcement. Missouri is a central US freight crossroads with I-70, I-44, I-55, I-35, and I-29 intersecting in the state. Kansas City and St. Louis are major distribution centers.
Inspection & Enforcement Program
Missouri operates weigh stations and mobile enforcement units. The Highway Patrol performs Level I through Level III inspections with a strong presence on I-70 and I-44 corridors.
Weight Limits & Oversize/Overweight
Missouri follows federal weight limits of 80,000 lbs GVW on Interstate highways. On the non-Interstate state highway system, Missouri generally follows the federal bridge formula. The state issues overweight permits through MoDOT.
Missouri-Specific Requirements
- Missouri enforces specific routing requirements for hazmat loads through the Kansas City and St. Louis metropolitan areas.
- The state has numerous weight-restricted bridges on secondary routes, particularly over the Missouri and Mississippi Rivers.
- Missouri requires specific permits for overlength loads that exceed the standard 53-foot trailer limit on certain routes.
Contact
MoDOT Motor Carrier Services: (800) 877-8499
Federal Requirements That Apply in Missouri
In addition to Missouri-specific regulations, all federal DOT and FMCSA requirements apply to commercial vehicles operating in MO. These guides cover each federal requirement in detail:
This information is provided as a general reference. State regulations change frequently. Always verify current requirements with the Missouri DOT or your compliance advisor before relying on any information presented here.