If you’re looking to travel through Missouri and you find yourself needing a permit, we’re here to help.
1. How long are permits valid for?
Single trip permits are valid for seven (7) travel days – pre-issued permits will be issued for seven (7) days. While Missouri State Highway Patrol honors electronic permits via, electronic devices, such as a smart phone it is preferred that drivers carry physical paper permits in their vehicles with them.
2. Are there legal limits for loads in Missouri?
Yes, legal permit limits can be seen below:
- Gross Weight: 80,000 lbs. on all other roadways (federal bridge formula applies)
- Width: 8’6” for all roads
- Height: 14’ on designated highways; 13’6” on all other roads
- Length: 45’ for Single Unit and Buses;
- 53’ for Semi-trailers;
- 28’ for Twins/Doubles and 65’ overall for all other roads;
- 75’+ overhang for Autotransporters;
- 75’ for Stinger steered; 65’ over 10 miles off designated system for all other roads;
- 20 miles into Rocky Mtn. doubles – not allowed on all other roads
- Missouri from Western for Turnpike Doubles – not allowed on all other roads
- Border on specific routes by special permit for Triples – not allowed on all other roads
- Nothing over 97’ and only up to 3 units for Saddlemounts; only up to 3 units allowed on all other roads
3. Are there permit limits in Missouri? What are they?
Yes, the permit limits in Missouri vary based on gross weight, length, width, height and weight. They are as follows:
- Single: 20,000
- Tandem: 46,000
- Tridum: 60,000
- Quad: 72,000
- Gross Weight:
- 5 Axles: 104,000
- 6 Axles: 120,000
- 7 Axles (1-2-4): 130,000
- 7 Axles (1-2-3-1 & 1-3-2-1): 138,000
- 7 Axles (1-2-2-2): 150,000
- 8 Axles (1-3-4): 144,000
- 8 Axles (All other config.): 160,000
- 9 Axles (1-4-4): 156,000
- Length: 150’
- Width: 16’
- Height: 16’—Over 17’ requires approval from utility companies.
4. Is continuous travel allowed for oversize permits in Missouri?
Travel is allowed all day Saturday and Sunday except in metropolitan and tourist areas. Any loads over 14’ wide are not allowed to travel on weekends. If a load is only overweight, you may travel 24-hours.
All travel must be on the basis of a written applications and single trip, one-way permit that should be issued by either the district or headquarters office.
Travel through Metro areas of St. Charles, Kansas City and Springfield is prohibited between the hours of 7:00-9:00 AM and 4:00-6:00 PM on or within the following routes or areas: St. Louis restricted between 6:30-9:00 AM and 3:30-6:00 PM.
Travel is barred during the following Holidays:
- New Year’s Day
- Memorial Day
- Labor Day
- Independence Day
- Christmas Day
- Thanksgiving Day
Note that travel will be restricted at 12:00 PM the day preceding the holiday or the holiday weekend period.
5. When are escorts needed in Missouri?
Escorts are required on interstates and other divided highways. Both front and rear escorts are required for all multi-lane undivided and 2-lane highways – one escort in the front one escort in the rear. Please note O/O conveys are not allowed.
- 2-Lane & Undivided Highways:
- Width over 12’4” to 14’, 2-lane undivided – 1 front escort required 1 rear escort
- Width over 12’4” to 14’, off designated highways; 1 front escort 1 rear escort
- Width over 14’ to 16’; 1 front escort 1 rear escort
- Length over 90’ for a combo unit on all highways except divided highways; 1 rear escort
- Height over 15’6” and route survey; 1 escort with H.Pole
- Interstate and Divided Multi-Lane Highways:
- Width over 12’4” to 16’ 1 rear escort
- Height over 15’6” and route survey 1 escort with H.Pole
- Additional factors determining escorts
- Flagmen may be mandatory in some cases, such as a load being equal to or over the width of a lane or on a 2-lane bridge where movement infringes on the neighboring lane. An escort may act as a flagmen when necessary.
- Special escort requirement may be specified if size, operation of move or speed may require them.
What is a Superload in Missouri?
According to Missouri, loads that exceed aforementioned routine-issued dimensions and weights, including gross and axles are measured as superloads. There are many exceptions and classifications because of this, so if you have questions feel free to reach out to us via email or phone for additional emails.
We can help you get permits in Missouri, just give us a call at (800) 359-9407 or send us an email.