AK state page · Last reviewed 2026-05-26

Alaska Truck Weight Limits and Permit Sources

Alaska truck weight limits with ADOT&PF as the single permit, enforcement, and seasonal restriction agency — a structure unique among U.S. states.

At-a-glance summary

Field Value Source Status Confidence
Gross Federal Interstate gross limit is 80,000 lb; Alaska-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; Alaska-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; Alaska-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 Alaska Department of Transportation and Public Facilities confirmed high
Seasonal / frost Alaska DOT&PF publishes commercial vehicle weight restriction notices and regional bulletins; check the current restriction notice before travel. confirmed high
Fine source Official fine structure not confirmed in this review. not found in official review low

Field-level reference data

Regular weight limits

Gross vehicle weight limit Federal Interstate gross limit is 80,000 lb; Alaska-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; Alaska-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; Alaska-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 Alaska Department of Transportation and Public Facilities confirmed high
Permit office name Alaska DOT&PF Commercial Vehicle Permits confirmed high
Official permit URL Alaska DOT&PF commercial vehicle permit source. confirmed high
Online permit portal Use Alaska DOT&PF Commercial Vehicle Permits official source for current online filing or portal links. inferred from official source medium
Permit contact Use contact information published by Alaska DOT&PF Commercial Vehicle 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 Alaska DOT&PF publishes commercial vehicle weight restriction notices and regional bulletins; check the current restriction notice before travel. confirmed high
Seasonal weight notes Alaska restrictions are notice- and route-dependent; verify the current DOT&PF commercial vehicle restriction page and any permit terms before dispatch. confirmed high
Official seasonal URL Alaska DOT&PF commercial vehicle weight restriction notices. confirmed high

Fines and enforcement

Overweight fine structure Official fine structure not confirmed in this review. not found in official review low
Overweight ticket notes Use the actual citation, current statute, and permit terms before estimating penalties. not found in official review low
Enforcement agency Alaska DOT&PF Measurement Standards and Commercial Vehicle Compliance confirmed medium
Fine official URL not found in official review low
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 Alaska DOT&PF commercial vehicle permit materials were reviewed for enforcement context. Round 6 did not find a separate official fine schedule source clear enough to raise fine confidence. 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

Alaska’s weight review has a structural difference from most other states: Alaska DOT&PF is the single agency that handles commercial vehicle permits, seasonal weight restriction notices, and measurement standards compliance. That consolidation matters because permit questions, seasonal status questions, and enforcement-adjacent questions can often be answered from the same agency portal rather than requiring separate lookups through different state departments.

Reading the Alaska weight table

Weight field data for Alaska uses the federal Interstate baseline as the foundation, with state-specific detail in the FHWA state law compilation linked in the table. Read each row independently — gross weight, single axle, tandem, and bridge formula all run as separate checks. A load that passes gross may still be over on a drive tandem; a load that passes all axle group checks may still trip a bridge formula calculation at a specific axle spacing.

For Alaska’s non-Interstate routes, the FHWA state law compilation and any current permit terms are the reference points. The federal shorthand doesn’t automatically extend to state roads or local access routes, particularly in regions where road conditions and infrastructure differ significantly from the continental Interstate network.

Permit and route authority in Alaska

Alaska DOT&PF Commercial Vehicle Permits is the permit authority for over-limit moves in Alaska. Permit applications should be submitted before the move, not after a citation. The permit will specify route, dates, axle weights, vehicle configuration, and any conditions that apply to that specific move. An old permit approval should not be reused without checking whether the route, equipment, or travel window still matches the original approval.

Alaska’s geography means that some permit routes involve ferry segments or restricted road classifications that don’t appear in continental routing. Verify route-specific conditions through the current DOT&PF permit materials.

Seasonal, route, and local checks

Alaska DOT&PF publishes commercial vehicle weight restriction notices and regional bulletins covering seasonal weight limits. These are worth checking directly before any move that uses state or local roads — the restrictions are notice-based and can change with conditions rather than following a fixed calendar date. The specific restriction notice, not a general statewide summary, is the controlling source for a given route and time period.

This review confirmed that seasonal restriction notices exist; the current bulletin for the specific route and region is the piece that needs a live check close to movement time.

Tickets and enforcement notes

Alaska DOT&PF Measurement Standards and Commercial Vehicle Compliance is the enforcement agency confirmed in this review. No official fine schedule was found in this review — the fine field remains low confidence. If a weight violation results in a citation in Alaska, the citation itself, the relevant Alaska statute, and any agency instruction attached to the citation are the sources to work from. A private scale ticket records measured weight but doesn’t resolve a citation or establish authority for an over-limit move.

Source-strength notes for Alaska

The field table shows 6 high, 20 medium, and 3 low-confidence fields across 6 source records. The permit agency, enforcement agency, and seasonal restriction fields are the stronger areas. The fine structure is the notable gap — no Alaska-specific official fine schedule was confirmed, leaving that field low confidence. For any situation involving a citation, work from the actual citation document and current Alaska statute rather than this page’s fine field.

Building an Alaska source file

Pair this Alaska page with the axle weight table, permit office list, seasonal restriction notes, and fine-source comparison for a complete multi-state picture. The seasonal restriction notes page is particularly relevant for Alaska because the seasonal field here is confirmed but date-dependent.

Scale ticket reading belongs with How to Read a CAT Scale Ticket. Distribution adjustments belong with How to Slide Tandems. Axle spacing and bridge formula questions belong with Bridge Formula Explained.

FAQ

Which agency handles both permits and enforcement in Alaska?

Alaska DOT&PF is the single agency for commercial vehicle permits, seasonal weight restriction notices, and measurement standards compliance in Alaska.

Does Alaska have seasonal weight restrictions?

Alaska DOT&PF publishes seasonal weight restriction notices. Check the current ADOT&PF materials for specific roads and timing before travel.

What statute covers Alaska overweight penalties?

The FHWA state law compilation for Alaska is the reviewed source for overweight penalty context. Use the actual citation for the controlling statute.