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Missouri : permis hors normes

Limites légales de taille/poids, seuils d'escorte, restrictions de circulation et coordonnées du bureau de permis pour Missouri.

Dimensions maximales légales (sans permis)

Largeur
8.5ft (102in)
Hauteur
13.5ft (162in) — la limite varie selon l’itinéraire
Longueur maximale de la semi-remorque
53ft
Longueur hors tout maximale de l’ensemble
60ft
Poids brut
80,000 lbs
Essieu simple
20,000 lbs
Essieu tandem
34,000 lbs

RSMo 304.170: 14 ft (168 in) applies ONLY on the interstate highway system and on routes designated by the Missouri Highways and Transportation Commission. On ALL OTHER HIGHWAYS the maximum height is 13 ft 6 in (162 in). The figure shown is the limit that holds everywhere in the state; confirm your specific route before planning to 14 ft.

Source officielle de cette limite de hauteur →

Road-class dependent — a single number cannot be correct. RSMo 304.170.5 sets 60 ft overall as the DEFAULT, then exempts the interstate system, where the only limit is the 53 ft semitrailer and there is NO overall limit ("THERE IS NO OVERALL LENGTH LIMIT FOR THIS VEHICLE ON THE ROUTES MENTIONED ABOVE" — MSHP's own body text). Under 304.170.11 the commission may extend that to designated non-interstate routes plus 10 miles. ⚠️ The MSHP brochure HEADLINES 60 ft, which under-reports the legal length on the National Network while over-reporting what is legal on an undesignated county road.

Source officielle de ces limites de longueur →

Seuils d'escorte / voiture-pilote (consultez le glossaire pour les termes, les exigences de certification pour le conducteur)

Ces valeurs d'escorte dépendent de l'itinéraire : elles varient selon la classification de la route, la largeur des voies, le nombre de voies et l'heure de circulation. Confirmez auprès du bureau des permis avant de partir.

Escorte avant requise au-delà de
12.5ft de largeur
Escorte arrière requise au-delà de
12.5ft de largeur
Les deux escortes requises au-delà de
14ft de largeur
Escorte de hauteur requise au-delà de
15.5ft de hauteur
Escorte par poids requise au-delà de
220,000 lbs

Width (7 CSR 10-25.020): base overwidth escort threshold is over 12'6" (150 in). Over 12'6"-14': front escort on two-lane, rear on divided/undivided. Over 14'-16': front AND rear on two-lane/undivided, rear on divided. Over 16'-18': front and rear on all highways, plus additional front and a law-enforcement escort on two-lane. Over 18': front, rear and law-enforcement on all highways, plus additional front on two-lane. HEIGHT: over 15'6" (186 in) requires a front height-detection escort on all highways; over 16' adds front on two-lane; over 17' adds law-enforcement on all highways. LENGTH: over 110'-125' = rear on all except divided; over 125'-150' = rear on all; over 150' = rear + law-enforcement, plus additional front on two-lane. WEIGHT: over 220,000-350,000 lb = front escort on two-lane; over 350,000 lb = front and rear on all plus additional front on two-lane. Loads over 160,000 lb require a front and two rear escorts when bridge-crawling in Kansas City and St. Louis. Escort requirements are cumulative; Missouri State Highway Patrol escorts may be added as needed.

Restrictions de circulation

Circulation de nuit
Généralement permise
Circulation en fin de semaine
Généralement permise
Circulation le dimanche
Généralement permise

General rule: travel limited to 1/2 hour before sunrise to 1/2 hour after sunset; no movement when roads snow/ice covered, in hazardous cross winds, or visibility under 500'. NIGHT: over-width loads not exceeding 12'6" that are legal height and not over 110' long MAY travel at night. WEEKEND/SUNDAY: allowed generally EXCEPT no Saturday/Sunday movement in the Lake of the Ozarks area (May 25-Labor Day) and the Branson area (May 1-Nov 30) on named routes. METRO CURFEWS (Mon-Fri; NOT overweight-only loads): St. Louis City & County 6:30-9:00 a.m. and 3:30-6:30 p.m.; St. Charles & Jefferson Counties similar; Kansas City area 7:00-9:00 a.m. and 4:00-6:00 p.m.; Springfield 7:00-9:00 a.m. and 4:00-6:00 p.m. Superloads: no movement 6:30-9:00 a.m. and 3:30-6:00 p.m. on non-divided state routes; Sat/Sun only for moves 16' wide or less.

Interdictions les jours fériés : New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day.

Voyez comment Missouri se compare à chaque État ›

Seuils de super-charge

Largeur supérieure à
16ft
Hauteur supérieure à
16ft
Longueur supérieure à
150ft
Poids supérieur à
160,000 lbs

7 CSR 10-25.020(15) 'Super Heavy and Large Load Movement': applications exceeding routine permit limits (generally over 16' wide, 16' high, 150' long, and/or over 160,000 lb gross) are handled as superloads, submitted electronically with insurance; a minimum $425 escrow may be required for bridge analysis; allow at least two weeks for route evaluation. Loaded height over 17' requires written utility approval. Gross weight over 350,000 lb requires an additional power unit. Missouri State Highway Patrol escorts required over 16' wide on any two-lane, 18' wide on divided/multi-lane undivided, 150' long, or 17' high.

Coût estimé du permis À jour

$15 + $250 if over 16ft wide/16ft tall/150ft long + $20 per 10,000 lb over legal; bridge fee $425–$925 if over 160,000 lbs

Traitement typique : 7-day validity

Source : MoDOT regulation (~2025).

Frais de permis seulement — n'inclut pas les coûts du service d'escorte/voiture-pilote (au prix du marché, organisés séparément) ni les frais de services de permis tiers. Il s'agit d'une estimation à des fins de planification, pas d'une soumission.

Obtenir un permis

Portail en ligne
https://mcs.modot.mo.gov/
Téléphone
866-831-6277

MoDOT ePERMIT online system.

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