At-a-glance summary
| Field | Value | Source | Status | Confidence |
|---|---|---|---|---|
| Gross | Federal Interstate gross limit is 80,000 lb; Missouri-specific limits are in the FHWA state law compilation linked here. | inferred from official source | medium | |
| Single axle | Federal Interstate single-axle limit is 20,000 lb; Missouri-specific limits are in the FHWA state law compilation linked here. | inferred from official source | medium | |
| Tandem axle | Federal Interstate tandem limit is 34,000 lb; Missouri-specific limits are in the FHWA state law compilation linked here. | inferred from official source | medium | |
| Bridge formula | Federal bridge formula checks apply on Interstate routes; verify state exceptions and permit conditions before movement. | inferred from official source | medium | |
| Permit agency | Missouri Department of Transportation | confirmed | high | |
| Seasonal / frost | No official statewide seasonal or frost weight restriction was confirmed during this review. | not found in official review | low | |
| Fine source | Missouri Revised Statutes section 304.240 is the official source reviewed for vehicle weight penalty context. | confirmed | medium |
Field-level reference data
Regular weight limits
| Gross vehicle weight limit | Federal Interstate gross limit is 80,000 lb; Missouri-specific limits are in the FHWA state law compilation linked here. | inferred from official source | medium | |
|---|---|---|---|---|
| Single axle limit | Federal Interstate single-axle limit is 20,000 lb; Missouri-specific limits are in the FHWA state law compilation linked here. | inferred from official source | medium | |
| Tandem axle limit | Federal Interstate tandem limit is 34,000 lb; Missouri-specific limits are in the FHWA state law compilation linked here. | inferred from official source | medium | |
| Bridge formula applies | Federal bridge formula checks apply on Interstate routes; verify state exceptions and permit conditions before movement. | inferred from official source | medium | |
| Interstate notes | Use FHWA Interstate limits together with the state source and any permit conditions. | inferred from official source | medium | |
| Non-Interstate notes | Use the reviewed state source and local postings for non-Interstate operation. | inferred from official source | medium |
Axle and loading notes
| Steer axle notes | Steer axle review should include axle law, tire/equipment ratings, registration, and route postings. | inferred from official source | medium | |
|---|---|---|---|---|
| Drive axle notes | Drive axle groups should be checked against tandem/group limits and permit terms. | inferred from official source | medium | |
| Trailer tandem notes | Trailer tandem position changes distribution and may affect spacing-sensitive checks; re-weigh after adjustment. | inferred from official source | medium | |
| Fifth wheel notes | Fifth-wheel movement redistributes weight but does not create permit authority. | inferred from official source | medium | |
| Bridge law notes | Check FHWA bridge formula and the state source when axle spacing is close to a limit. | inferred from official source | medium |
Oversize / overweight permits
| Permit agency | Missouri Department of Transportation | confirmed | high | |
|---|---|---|---|---|
| Permit office name | MoDOT Motor Carrier Services | confirmed | high | |
| Official permit URL | MoDOT Motor Carrier Services permit source. | confirmed | high | |
| Online permit portal | Use MoDOT Motor Carrier Services for current OS/OW permit access. | inferred from official source | medium | |
| Permit contact | Use MoDOT MCS contact details from the official source. | inferred from official source | medium | |
| Permit notes | Permit terms, route conditions, dates, and vehicle configuration should be checked on the official permit source before travel. | inferred from official source | medium |
Seasonal and special restrictions
| Frost / seasonal restriction | No official statewide seasonal or frost weight restriction was confirmed during this review. | not found in official review | low | |
|---|---|---|---|---|
| Seasonal weight notes | Local route, bridge, or permit restrictions may still apply; no statewide seasonal weight restriction was confirmed in this review. | not found in official review | low | |
| Official seasonal URL | not found in official review | low |
Fines and enforcement
| Overweight fine structure | Missouri Revised Statutes section 304.240 is the official source reviewed for vehicle weight penalty context. | confirmed | medium | |
|---|---|---|---|---|
| Overweight ticket notes | Use RSMo section 304.240 and the issued citation before estimating a weight-violation penalty. | inferred from official source | medium | |
| Enforcement agency | Missouri State Highway Patrol Commercial Vehicle Enforcement | confirmed | medium | |
| Fine official URL | Official fine or penalty source linked in Sources. | confirmed | medium | |
| CSA / safety notes | CSA impact depends on inspection and reporting; use FMCSA SMS materials and the actual inspection record. | inferred from official source | medium |
Scale notes
| Public scale notes | A public scale ticket is a self-check record, not state permit authority. | inferred from official source | medium | |
|---|---|---|---|---|
| Weigh station / enforcement notes | Missouri State Highway Patrol Commercial Vehicle Enforcement is the reviewed official enforcement source. | inferred from official source | medium | |
| CAT Scale disclaimer | CAT Scale tickets are private self-check records and do not replace official permits or enforcement decisions. | inferred from official source | medium | |
| Scale ticket notes | Use steer, drive, trailer, and gross readings to compare against official limits before travel. | inferred from official source | medium |
Missouri’s weight review pulls from three solid official sources: MoDOT Motor Carrier Services for permits, Missouri Revised Statutes section 304.240 for the penalty framework, and Missouri State Highway Patrol Commercial Vehicle Enforcement for roadside enforcement. Having all three fields confirmed with direct official sources puts Missouri in a better sourcing position than many other FHWA-baseline states.
Reading the Missouri weight table
Weight rows use the federal Interstate baseline and the FHWA state law compilation for Missouri. Missouri is a major freight crossroads — I-70, I-44, I-55 — with high through-traffic volumes. Federal baseline applies on Interstate routes. For state routes and local roads, verify the FHWA state law compilation and any permit conditions.
Missouri’s agricultural and industrial freight includes a significant share of non-Interstate route activity. Local bridge postings and road conditions on rural state routes can impose limits lower than the state baseline.
Permit and route authority in Missouri
MoDOT Motor Carrier Services handles over-limit permits for Missouri. Applications go through MoDOT’s current permit system. Missouri’s position as a major through-state means that many oversize and overweight routes are routine, but permit terms should still be verified for each specific move. Permits cover route, dates, vehicle configuration, and axle weights.
Seasonal, route, and local checks
No statewide frost-law or seasonal weight restriction was confirmed for Missouri in this review. Missouri’s climate produces spring thaw conditions that can affect local roads, but a statewide seasonal source wasn’t confirmed. Local and county road restrictions may apply on rural routes. For moves that use county roads in spring, checking with local road authorities is worth the additional step.
Tickets and enforcement notes
Missouri State Highway Patrol Commercial Vehicle Enforcement is the confirmed enforcement agency. Missouri Revised Statutes section 304.240 is the official statute reviewed for overweight penalty context. For any citation, the specific RSS section, excess weight, and court instructions are the controlling documents.
Source-strength notes for Missouri
The 7 source records behind this page support 3 high-confidence fields directly, 23 at medium confidence, and 3 at low confidence. Permit agency, enforcement agency, and fine statute fields all have direct official support — a complete sourcing picture for the three most operationally important fields. The seasonal restriction field is the main low-confidence area here.
Building a Missouri source file
A Missouri dispatch file should include MoDOT permit documentation, current scale ticket, approved route, and the RSS 304.240 reference. For I-70 and I-44 corridor planning, the axle weight table, permit office list, seasonal restrictions, and overweight fines pages support multi-state planning.
How to Read a CAT Scale Ticket covers ticket reading. How to Slide Tandems covers distribution. Bridge Formula Explained covers bridge spacing.
FAQ
Where should I verify Missouri permit requirements?
Use the official MoDOT Motor Carrier Services source linked on this page before moving over legal size or weight.
Are Missouri seasonal restrictions fully confirmed here?
No. This review did not confirm a statewide seasonal or frost source, so route and permit restrictions still need checking.
Are these weight figures valid for Missouri state routes and non-Interstate roads?
The values shown are the federal Interstate baseline. State-specific non-Interstate limits are in the FHWA state law compilation linked here and may differ from the baseline.