Coverage & sources
How ODPermit checks
a loaded vehicle.
Use the measurement basis, source dates, and cost conditions below to read your state permit results.
All 50 states and DC in the public calculator.
Agency-fee estimates cover every state and DC. The dimension check uses the August 31, 2026 rules snapshot for the 48 contiguous states; Alaska, Hawaii and DC use their own fee schedules and state guides.
Find official permit resources for all 50 states and DC, including each permit authority and its requirements.
Multi-state estimates use a routing provider to propose the itinerary. A proposed state sequence is not an approved heavy-haul route or a clearance survey.
Cargo dimensions are not loaded dimensions.
Overall length includes the tractor, trailer, and projecting load. Overall width is the widest part of the loaded combination. Overall height runs from the road surface to the highest loaded point. Gross vehicle weight includes the vehicle and its load.
Equipment, axle layout, divisibility, move date and roads all affect the result. Enter confirmed facts, and check every field the document reader fills in.
Read conditions alongside the numbers.
Fees can depend on distance, weight, route and permit type. A fee that cannot be determined is not treated as zero. The result is an agency-fee estimate, not a full quote or a promise that a permit will be issued.
Escort results show what the rules may require. They do not book pilot cars or police; confirm escorts against the issued permit route.
Official sources and review dates
Each finding links to its official source and review date. The same inputs and rules release always give the same result, and any limit in the sources is stated with it.
The August 31, 2026 snapshot is a dated reference, not a live agency feed. Check current closures and restrictions with the responsible authority before dispatch.
For federal context and state permit contacts, see the FHWA oversize/overweight permit resource.
Source choices and rule watch
Reviewed October 11, 2026. When official publications differ, the notes below explain the source followed and what still needs the issuing agency’s decision. A proposed rule is not treated as effective.
DC escort FAQs disagree
The archived FAQ requires police at lower thresholds than the current permit FAQ. Both remain published. Show the conflict and plan for possible police at the lower threshold until DDOT/MPD assigns the crew.
North Carolina escort publications differ
Publication E-9 supplies the current combined escort model, including the weight and rear-overhang requirements. The handbook has stricter two-lane width and exact-150-foot length rules. The calculator names those differences and asks for the issued assignment.
Colorado’s current fee schedule
Use the current permit fee schedule and applicable axle/surcharge components. An older FAQ’s $15/$45 figures do not include the current charges. Route-color and special-permit conditions remain separate.
Indiana fee publications differ
Where the July 2026 DOR fee sheet and 105 IAC 10-1.5-3 select different combined charges, show a range. Do not silently discard an executive or review charge. Agency-selected bridge charges remain additional.
West Virginia night and weekend travel
The current FAQ limits overweight-only night travel to 110,000 lb on designated multilane roads. Current program guidance grants weekend requests up to 14′ wide, with Turnpike and low-impact exceptions. Older permit information contains different large-load windows; obtain the exact travel authorization for wider loads and holidays.
Rhode Island fees and electronic documents
Use the statutory fee over the older rule’s $20 figure. RIDOT’s current FAQ explicitly accepts electronic permits and bridge restriction lists when available inside the vehicle, and supplies the designated-route rush-hour limits.
Pennsylvania fee date and whole-ton rounding
Use the July 2025 fee schedule for current base fees, not older quick-reference amounts. M-936A supplies the method: use the lower of registered or legal gross and round excess tons up before applying mileage.
Arkansas rules renumbered
Use 27 CAR Part 111, effective September 21, 2026. Section 111-105(i)(2) permits a device screen of at least six inches for the specified self-issued permit. Historical citations remain dated references.
Missouri’s temporary 2026 pilot
The 2026 notice changes police-escort thresholds from the 2025 book. Apply the notice for moves during the pilot and recheck before dispatch because MoDOT may end it without notice. Other requirements in the book still apply.
Delaware superload provisions take precedence
Part 5 adds front and rear escorts and State Police at its inclusive superload thresholds, including 15′ height or width and 120′ length. Reading only Part 4’s 17′6″ police-height row omits these additional conditions.
Alabama superload weight
The currently published ALDOT superload information lists a threshold above 300,000 lb. The QA report’s 250,000 lb value was not adopted because it conflicts with the live agency document.
New Hampshire combined billing remains unresolved
RSA 266:22 lists dimension and weight charges separately. The linked tutorial index does not establish whether the dimension charge stacks. Show a bounded range including the possible $6 charge and request the assessed permit price.
Tennessee weight-price examples
The rule charges excess ton-miles. The example chart lists 500-pound rows but does not instruct users to round every load to the next row. Keep the rule’s ton-mile calculation; do not invent a 500-pound rounding charge.
Watch: Hawaii’s fee waiver
HDOT waived OS/OW application fees on July 8, 2026 until further notice. Current estimates show $0, with the permit requirement retained. Recheck the notice before applying; historical movement dates retain the prior schedule.
Watch: Kentucky’s proposed fee increase
Keep the current $60 single-trip fee. The proposed $120 fee and $500 superload bridge-analysis charge are not applied without an enacted effective date.