At-a-glance summary
| Field | Value | Source | Status | Confidence |
|---|---|---|---|---|
| Gross | Federal Interstate gross limit is 80,000 lb; Utah-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; Utah-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; Utah-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 | Utah 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 | Utah Code section 72-7-409 is the official source reviewed for size and weight penalties. | confirmed | medium |
Field-level reference data
Regular weight limits
| Gross vehicle weight limit | Federal Interstate gross limit is 80,000 lb; Utah-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; Utah-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; Utah-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 | Utah Department of Transportation | confirmed | high | |
|---|---|---|---|---|
| Permit office name | UDOT Oversize/Overweight Permits | confirmed | high | |
| Official permit URL | UDOT oversize/overweight permit source. | confirmed | high | |
| Online permit portal | Use UDOT Oversize/Overweight Permits official source for current online filing or portal links. | inferred from official source | medium | |
| Permit contact | Use contact information published by UDOT Oversize/Overweight Permits. | 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 | Utah Code section 72-7-409 is the official source reviewed for size and weight penalties. | confirmed | medium | |
|---|---|---|---|---|
| Overweight ticket notes | Use Utah Code section 72-7-409 with the issued citation and permit terms before estimating penalties. | inferred from official source | medium | |
| Enforcement agency | Utah Highway Patrol Motor Carrier Division | 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 | Compare scale readings with official limits, route postings, and any permit terms. | 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 |
Utah’s fine reference is Utah Code section 72-7-409, covering size and weight penalties. Utah Highway Patrol Motor Carrier Division handles enforcement. UDOT handles permits. All three fields are confirmed with official sources. Utah’s mountain terrain and major I-15 and I-70 corridors make this a state where bridge formula compliance and route-specific conditions deserve particular attention.
Reading the Utah weight table
Weight rows use the federal Interstate baseline and the FHWA state law compilation for Utah. I-15, I-70, and I-80 carry major freight volumes. Federal baseline applies on those routes. For US highways and state routes — including routes serving mining and energy operations in southern Utah — verify the FHWA state law compilation and any permit conditions.
Utah’s mountain passes and canyon routes mean that bridge formula spacing is practically relevant for certain axle configurations. When the route includes canyon or mountain segments, checking the bridge formula calculation for the specific configuration is worth the additional step.
Permit and route authority in Utah
UDOT Oversize/Overweight Permits handles over-limit permits for Utah. Applications go through UDOT’s current permit portal. Utah’s mining and construction sectors produce significant oversize and overweight move volumes. Permits cover route, dates, vehicle configuration, and axle weights. Changes to equipment or routing require permit review.
Seasonal, route, and local checks
No statewide frost-law or seasonal weight restriction was confirmed for Utah in this review. Utah’s climate doesn’t produce the same frost-law restrictions as northern states. However, mountain pass conditions and extreme weather events can impose temporary road restrictions. Checking UDOT’s current road conditions for mountain segments is worthwhile for winter and spring moves through canyon or pass routes.
Tickets and enforcement notes
Utah Highway Patrol Motor Carrier Division is the confirmed enforcement agency. Utah Code section 72-7-409 is the official statute reviewed for size and weight penalty context. For any citation, the specific UC section, excess weight, and any court instructions are the controlling documents.
Source-strength notes for Utah
This page draws from 7 source records. Coverage spans 3 high-confidence, 23 medium-confidence, and 3 low-confidence fields. Permit agency, enforcement contact, and fine statute all carry direct source support. The seasonal field is where confidence falls to low.
Building a Utah source file
A Utah dispatch file should include UDOT permit documentation, current scale ticket, approved route, and the UC 72-7-409 reference. For I-15 and I-70 corridor planning, the axle weight table, permit office list, seasonal restrictions, and overweight fines pages support multi-state Mountain West planning.
How to Read a CAT Scale Ticket covers ticket reading. How to Slide Tandems covers distribution. Bridge Formula Explained covers bridge spacing on Utah’s mountain routes.
FAQ
What is Utah Code section 72-7-409?
Utah Code 72-7-409 is the official statute reviewed for size and weight penalties in Utah, providing a direct statutory anchor for the fine framework.
Who handles Utah commercial vehicle enforcement?
Utah Highway Patrol Motor Carrier Division handles roadside weight enforcement. UDOT Oversize/Overweight Permits handles over-limit permits.
Does Utah have statewide seasonal weight restrictions?
No statewide frost-law source was confirmed for Utah. Mountain pass conditions and weather events can impose temporary restrictions — check UDOT conditions.