TX state page · Last reviewed 2026-05-25

Texas Truck Weight Limits and Permit Sources

Texas size and weight limits, TxDMV permit links, load-zoned road notes, and DPS penalty references with field-level official sources.

At-a-glance summary

Field Value Source Status Confidence
Gross 80,000 lb general maximum gross weight listed by TxDMV. confirmed high
Single axle 20,000 lb single axle general legal limit listed by TxDMV. confirmed high
Tandem axle 34,000 lb tandem axle group general legal limit listed by TxDMV. confirmed high
Bridge formula Federal Interstate bridge formula checks still apply; TxDMV also publishes state size/weight tables and exceptions. inferred from official source medium
Permit agency Texas Department of Motor Vehicles. confirmed high
Seasonal / frost No official statewide frost-season weight restriction found during this review; Texas does publish load-zoned roads and restricted bridges. no statewide rule confirmed medium
Fine source Texas DPS summary of TRC 621.506 lists misdemeanor penalties and gross-overweight fine brackets; the legislature statute site was unavailable during review. inferred from official source medium

Field-level reference data

Regular weight limits

Gross vehicle weight limit 80,000 lb general maximum gross weight listed by TxDMV. confirmed high
Single axle limit 20,000 lb single axle general legal limit listed by TxDMV. confirmed high
Tandem axle limit 34,000 lb tandem axle group general legal limit listed by TxDMV. confirmed high
Bridge formula applies Federal Interstate bridge formula checks still apply; TxDMV also publishes state size/weight tables and exceptions. inferred from official source medium
Interstate notes TxDMV notes federal Interstate restrictions for some exception categories; verify route and commodity exceptions separately. inferred from official source medium
Non-Interstate notes TxDMV lists non-Interstate axle-group values including triple and quad groups, with exception categories requiring separate checks. confirmed high

Axle and loading notes

Steer axle notes Steer axle legality depends on axle, tire, registration, route, and equipment limits; TxDMV does not make a private scale ticket a permit. inferred from official source medium
Drive axle notes Compare drive tandems with the 34,000 lb tandem value unless a specific permit or exception controls. confirmed high
Trailer tandem notes Moving trailer tandems changes axle distribution but does not override TxDMV size/weight or load-zoned-road restrictions. inferred from official source medium
Fifth wheel notes A fifth-wheel adjustment can shift steer and drive weights; re-weigh and compare against TxDMV limits. inferred from official source medium
Bridge law notes Use FHWA bridge formula for Interstate checks and TxDMV/Texas route sources for state-specific limitations. inferred from official source medium

Oversize / overweight permits

Permit agency Texas Department of Motor Vehicles. confirmed high
Permit office name TxDMV Oversize/Overweight Permits Office. confirmed high
Official permit URL TxDMV Oversize/Overweight Permits page. confirmed high
Online permit portal TxPROS Permit Wizard is linked from TxDMV's official OS/OW permits page. confirmed high
Permit contact Use the contact information published on the TxDMV OS/OW permits page. confirmed high
Permit notes TxDMV states that vehicles or loads exceeding legal size or weight require an OS/OW permit and authorized route when applicable before traveling on Texas public roadways. confirmed high

Seasonal and special restrictions

Frost / seasonal restriction No official statewide frost-season weight restriction found during this review; Texas does publish load-zoned roads and restricted bridges. no statewide rule confirmed medium
Seasonal weight notes On load-zoned roads, TxDMV/TXDOT source material should be checked before travel because local axle or bridge limits can be lower than normal legal limits. inferred from official source medium
Official seasonal URL TxDOT Load Zoning page. inferred from official source medium

Fines and enforcement

Overweight fine structure Texas DPS summary of TRC 621.506 lists misdemeanor penalties and gross-overweight fine brackets; the legislature statute site was unavailable during review. inferred from official source medium
Overweight ticket notes Use the DPS summary as a pointer and re-check current Transportation Code text when the legislature site is available. inferred from official source medium
Enforcement agency Texas Department of Public Safety Commercial Vehicle Enforcement. confirmed high
Fine official URL Texas DPS general provisions relating to vehicle size and weight. inferred from official source medium
CSA / safety notes CSA impact depends on the inspection and reporting record; consult FMCSA SMS materials. inferred from official source medium

Scale notes

Public scale notes A scale ticket is useful for load distribution but is not a TxDMV permit or route authorization. inferred from official source medium
Weigh station / enforcement notes DPS Commercial Vehicle Enforcement is the relevant official enforcement source checked in this review. confirmed high
CAT Scale disclaimer CAT Scale tickets are private self-check records and do not replace TxDMV permits. inferred from official source medium
Scale ticket notes If a Texas ticket involves a load-zoned route or bridge, compare the ticket to the lower posted or zoned limit. inferred from official source medium

Texas has clear TxDMV pages for normal size/weight limits and permits. The watchout is route-level restriction: load-zoned roads and restricted bridges can matter even when the normal gross and tandem numbers look acceptable.

Texas is distinctive in two ways that affect compliance beyond the standard 80,000 lb / 34,000 lb framework. First, TxDMV lists non-Interstate exception categories — including triple and quad axle groups — that have different weight allowances than the standard tandem figure; verify which category applies to the actual vehicle configuration. Second, TxDOT’s load-zoned road system means certain roads carry posted limits lower than the general legal weight, regardless of what a scale ticket shows. A scale ticket confirming 79,500 lb gross does not tell the driver whether that weight is legal on the specific road segment ahead. Check TxDOT load zoning for any route that includes smaller state or county roads.

How to verify this yourself

Start with TxDMV’s size/weight page. If the load exceeds a normal legal limit, open the TxDMV OS/OW permit page and confirm whether TxPROS routing is required. For road-specific limits, check TxDOT load zoning before relying on a scale ticket.

FAQ

Who issues Texas oversize or overweight permits?

TxDMV is the official oversize/overweight permit authority for Texas public roadways.

Does Texas have a statewide frost law?

No statewide frost-season weight restriction was confirmed; load-zoned roads and restricted bridges still require route-level checking.

Why is the Texas fine field medium confidence?

It uses an official Texas DPS summary because the Texas Legislature statute site was under maintenance during review.