Wyoming Truck Weight Limits and Permit Sources

At-a-glance summary

Field-level reference data

Wyoming’s weight review has confirmed sources on both the permit side — Wyoming Highway Patrol Permits — and the enforcement side — Wyoming Highway Patrol Ports of Entry. Wyoming Statutes Title 31 Chapter 18 gives the official penalty reference. Having the same agency handle both permits and ports of entry means Wyoming’s commercial vehicle oversight is consolidated through the Wyoming Highway Patrol, which simplifies the source trail compared to states with separate permit and enforcement agencies.

Reading the Wyoming weight table

Weight rows use the federal Interstate baseline and the FHWA state law compilation for Wyoming. I-80, I-25, and I-90 are major freight corridors through Wyoming’s large rural geography. Federal baseline applies on those routes. For US highways and state routes — including routes serving Wyoming’s significant energy extraction operations — verify the FHWA state law compilation and any permit conditions.

Wyoming’s mountain passes on I-80 can impose weather-related road restrictions that affect movement windows independently of weight limits. When the route includes mountain segments, checking Wyoming Highway Patrol’s current road conditions alongside the weight review is worthwhile.

Permit and route authority in Wyoming

Wyoming Highway Patrol Permits handles over-limit permits for Wyoming. Applications go through WHP’s current permit system. Wyoming’s energy sector — oil, gas, and wind — produces 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 in this review. Wyoming’s climate and terrain mean that weather-related road closures and restrictions on mountain passes can affect movement windows — those conditions come from road closure orders rather than a formal frost-law weight restriction system. Checking Wyoming Highway Patrol’s current road conditions for I-80 mountain segments is worth the additional step for winter or spring moves through those corridors.

Tickets and enforcement notes

Wyoming Highway Patrol Ports of Entry is the confirmed enforcement agency. Wyoming Statutes Title 31 Chapter 18 is the official statute reviewed for overweight penalty context. For any citation issued at a Wyoming port of entry, the specific WYS section, excess weight, and any court instructions are the controlling documents.

Source-strength notes for Wyoming

6 source records back this page. The confidence breakdown is 3 high, 23 medium, and 3 low across the field set. Permit, enforcement, and fine statute fields are well-supported — each has direct official backing. Seasonal fields are low confidence — weather-related restrictions exist but don’t follow a traditional frost-law format.

Building a Wyoming source file

A Wyoming dispatch file should include WHP permit documentation, current scale ticket, approved route, and the WYS Title 31 Chapter 18 reference. For I-80 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 on Wyoming’s mountain corridor routes.