Legal size & loaded measurements
General width
8′6″8′6″ on the designated State Highway System; current Table 4 can restrict a road to 8′.
Loaded height
13′6″–14′13′6″ general statutory limit; designated highways may allow 14′. Current Table 4 and posted clearance can be lower.
Width & height by road
Width is 8′6″ on the designated State Highway System unless Table 4 restricts the route to 8′. General statutory height is 13′6″; designated routes can allow 14′, but Table 4 and posted clearances can be lower. Check each road on the proposed route.
Overall length
Length depends on straight truck, semitrailer, doubles, truck-trailer, bus, pole, transporter, towaway, saddlemount, network, and access route. Common values are 40-foot straight truck, 57 feet 6 inches National Network semitrailer, 53-foot semitrailer or 65-foot overall on other routes, and 28 feet 6 inches per short trailing unit.
Load overhang
Table 1 lists three feet front and six feet rear, but transporter, manufactured-vehicle, fiber/forage, pole, and structural-load measurement rules differ. Side projection depth also changes Class A versus Class C. Resolve geometry and program before deciding.
Axles, weight & bridges
Ordinary legal baselines are 20,000 single, 34,000 tandem, and 80,000 gross for five or more axles, but gross alone never determines legality. Apply bridge formula, all axle groups, spacing, tires, ratings, vehicle/commodity exceptions, Table 4, posted bridges, and exact route.
Alternative-fuel & idle-reduction allowances
Idle-reduction relief is capped at the lesser of 550 pounds or certified technology weight and requires written weight certification plus proof the equipment is fully functional. Natural-gas, battery-electric, or hydrogen relief is capped at the lesser of the qualifying power-system weight difference or 82,000 pounds gross. Neither overrides axle, bridge-formula, rating, posting, or route checks.
Loaded width
Table 1 permits 8 feet 6 inches on the designated State Highway System, but a route may be restricted to 8 feet by current Table 4. A.R.S. § 28-1093 preserves different road-designation and recreational-vehicle-appurtenance scopes.
Loaded height
The general statutory height without a permit is 13 feet 6 inches. Designated highway systems may allow 14 feet, and Table 1 uses 14 feet on the State Highway System unless current Table 4 further restricts the route to 13 feet 6 inches or another clearance.
Permits, routes & larger loads
State highways
ADOT permits cover only the State Highway System and the exact issued route. State, U.S., and Interstate labels do not eliminate Table 4, bridge, construction, closure, or issued-condition checks.
Local & other road authorities
Obtain separate authorization for every county, city, tribal, federal, private, or other non-ADOT segment. The live ADOT contact page includes Phoenix, Tucson, counties, Navajo Nation, AZ511, maps, and trip evaluation; recheck it rather than caching contacts.
When a permit is needed
A Table 1 exceedance on an ADOT route normally requires the permit in hand before movement, but vehicle class, configuration, operation, exemptions, level-grade crossing, route ownership, axle facts, and postings must be resolved first.
Class A permits
Class A is the ordinary specific non-reducible product up to 14 feet wide, 16 feet high, 120 feet overall, 250,000 pounds, and applicable permitted axle-group limits. It offers 96-hour, 30-day, and annual variants.
Class C permits
Use Class C review if a move exceeds any Class A size/weight limit, axle computation, route/bridge restriction, or Class C side-projection boundary. Submit exact addresses, route, axle/load drawing, certified weights when required, and all requested traffic/engineering material.
Permit validity
Do not call every single trip 'four days.' Class A is a 96-hour maximum; the live Class C page says four working days; 30-day, annual, envelope, and named special programs use different durations. Exit, effective dates, extension eligibility, and issued conditions control.
Application details
Collect identities and credentials, exact commodity/non-reducibility, origin/destination, requested state/federal route, vehicle/trailer plates and VIN, overall L/W/H/overhang/weight, axle count, and—when overweight—every axle spacing, width, tire count/width, and axle weight. Class C needs a detailed route and drawing.
Class A load limits
The Class A review envelope is no more than 14 feet wide, 16 feet high, 120 feet long, and 250,000 pounds, with R17-6-411 axle limits and all route restrictions. These are product limits, not permission to use every route.
Class C review
Arizona calls the above-envelope path Class C rather than publishing one universal 'superload' chart. Class C staff determine route, structure, traffic, escort, encroachment, contingency, analysis, and certified-weight requirements case by case.
Engineering & route preparation
Engineering is mandatory over 250,000 pounds, above an axle-table computation, or above a bridge restriction. ADOT's live page warns analysis may take up to two weeks and incorrect certified weights can trigger a new analysis and fee.
State permit fees
What the agency estimate includes
The calculator applies Arizona's maintained single-trip permit schedule to the loaded vehicle and the supplied fee inputs. It itemizes the supported state charges, including weight or distance charges where applicable. Annual permits, special products, local permissions and payment-method charges need their own applicable schedule.
AZ / Permit worksheet
Price your Arizona movement.
Enter the complete loaded vehicle. Get estimated agency fees and escort requirements before sharing your contact details.
The numbers behind your next move.
Your result will show the agency fee breakdown, potential pilot-car requirements, and the rules used to calculate them.
- 01 State agency fee subtotal
- 02 Escort & survey considerations
- 03 Sources & pricing assumptions
Single-state pricing uses the mileage you enter. For a proposed route and intermediate states, use the route calculator.
About the example equipment
The samples use ODPermit’s editable 48 ft flatbed · 5 axles planning profile. Loaded dimensions, gross weight, 100 state miles and Texas registration are example inputs, not a capacity rating or a route approval. Replace them with your actual setup.
Great Dane Freedom trailer specifications — 48 ft platform; the illustrated 40 in drop deck and 20 in drop support a 60 in upper-deck planning height. Combined tare and tractor geometry are editable ODPermit assumptions.
Pilot cars, height poles & surveys
14′6″-wide load example
Example: 14′6″ wide × 13′ high, 75′ overall, 72,000 lb gross, zero overhang or rear projection, ordinary nondivisible freight in daylight. Depending on the road or permit conditions: Arizona assigns pilot cars and police by highway segment, load and travel time under R17-6-305 and Table 4. A divided-road label alone cannot settle the assignment. Check the actual state routes and mileposts against ADOT's current restrictions when arranging escorts. Depending on the road or permit conditions: ADOT may require a route survey and contingency plan after reviewing a Class C movement's size, weight, roads, bridges and traffic conditions.
17′6″-high load example
Example: 9′ wide × 17′6″ high, 75′ overall, 72,000 lb gross, zero overhang or rear projection, ordinary nondivisible freight in daylight. Depending on the road or permit conditions: Arizona assigns pilot cars and police by highway segment, load and travel time under R17-6-305 and Table 4. A divided-road label alone cannot settle the assignment. Check the actual state routes and mileposts against ADOT's current restrictions when arranging escorts. Depending on the road or permit conditions: Where overhead utility lines cross the route, notify the responsible utility before transporting a load above 16 ft or any lower route-specific restriction. Depending on the road or permit conditions: ADOT may require a route survey and contingency plan after reviewing a Class C movement's size, weight, roads, bridges and traffic conditions.
Travel hours & road restrictions
Continuous travel
Subject to Table 4 and the permit, continuous 24/7 travel requires every limit: at most 10 feet wide, 14 feet 6 inches high, 10 feet front/rear overhang, 120 feet overall, and 250,000 pounds. One missing overhang or route fact prevents this conclusion.
Daylight travel
Above the continuous envelope, normal movement is one-half hour before sunrise through one-half hour after sunset. Location, tribal time, current route restrictions, permit-specific hours, escorts, holiday, weather, and curfew can narrow it.
Night travel
Eligible loads within 16 feet width/height, 120 feet and 250,000 pounds may use select-route non-holiday night/weekend movement beginning 3:00 a.m.; pre-sunrise escort bands apply. It is not statewide automatic night permission.
Holiday travel
For loads over 10 feet wide, 14 feet 6 inches high, 10 feet front/rear overhang, 120 feet, or 250,000 pounds, holiday shutdown uses noon-before/resume rules based on the weekday. In 2026: Memorial Day stops noon May 22; Independence Day noon July 2; Labor Day noon Sept. 4; Thanksgiving noon Nov. 25; Christmas noon Dec. 24.
Phoenix & Tucson travel hours
Phoenix and Tucson have route-specific 7:00-9:00 a.m. and 4:00-6:00 p.m. weekday controls for moves over 10 feet wide. Some 10-to-12-foot segments require a rear escort; others prohibit the full over-10-foot band.
Weather & visibility
Stop for visibility under 500 feet, loss of normal traction, destabilizing high wind/falling-object conditions, or an official prohibitory advisory. A permit never overrides an unsafe-condition stop.
Signs, flags & safety equipment
Signs & markings
At nine feet or wider, use compliant OVERSIZE LOAD signs on the front/roof and rear, readable and visible as specified, and conceal them when not in service.
Current route restrictions
Daily route check, lower permit/posted speed, issued lane and separation conditions, no unauthorized highway-feature removal, encroachment approval where needed, safe stop/pullout planning, and compliance with every posted/issued instruction remain movement duties.
Utility coordination
Class C overheight work needs actual clearance verification. Notify responsible utilities when lines cross the route and the move exceeds 16 feet or a lower route-specific height; obtain encroachment approval for any right-of-way work.
Cargo & carrier safety
Construct, load, fasten, and when required cover the vehicle so cargo cannot drop, sift, leak, escape, loosen, detach, or create a hazard. The traction-sand, maintenance-water, incidental agricultural-leaf/stem, and on-farm agricultural language is narrow; match every condition before relying on it.
Safety equipment
A permittee and driver—and a qualifying public snow-removal actor under R17-6-102(D)—must follow the motor-carrier safety rules incorporated through 17 A.A.C. 5 Article 2 to the extent applicable. Keep carrier/driver compliance separate from dimensional permit approval.
What the driver needs
Permit product limits
For an envelope permit, carry the legible valid permit in immediate possession and display it on demand; the power unit must be listed. A photocopy or facsimile is invalid. Annual tridem movement adds the trip-authorization number.
Application details
Preserve registration, IFTA when applicable, exact application/axle drawing, weighmaster or certified weights, route survey, contingency, engineering approval, utility/encroachment documents, local/tribal approvals, and issued route attachments. Product and agency response decide the final driver packet.
Special-load paperwork
Mobile-home moves may require a 504 tax clearance or new-home bill of lading plus serial/manufacturer/model data. Envelope carriers retain bills of lading, manifests, and invoices/time cards for three years. Houseboat, crane, LCV, tridem, and emergency programs add exact records and notifications.
Special equipment & permit programs
Other permit products
Named programs include Class A, Class C, envelopes, designated-route height, commercial recreational vehicles, cranes/drilling rigs, road machinery, fiber/forage module movers, border combinations, reducible LCVs, overwidth watercraft, Page-Lake Powell houseboats, Class C tridems, mobile homes, public snow removal, forest/biomass, military/nuclear/bulk milk, emergency relief, and towing exceptions. Never infer one from commodity words alone.
Mobile-home permits
Mobile-home moves require the exact product, serial/manufacturer/model, tax-clearance or new-home bill-of-lading status, route, axle facts, and issued conditions. Easy C is limited to 16 feet wide/high, 120 feet, 80,000 pounds, legal axle groups, and ADOT roads.
Cranes
A crane/drilling-rig/specialty permit binds one exact configuration and supporting weight documentation. Boom, dolly, counterweight, trailer, dimension, or weight changes can invalidate it; its continuous-travel width differs from ordinary loads.
Longer combination vehicles
Class E permits for reducible longer combination vehicles are confined to named northern routes and configurations. Length, weight, lane use, bridge formula, weather, Port-of-Entry and issued-permit conditions all apply.
Boat & watercraft moves
Overwidth watercraft, personal-watercraft lake access, and Page-Lake Powell houseboats are different programs. Resolve registration, lake/launch radius, exact route, dimensions, weight, notification, daylight/holiday scope, and envelope versus special permit.
Public snow-removal equipment
The public snow-removal exception is limited to named state, county, city, or municipal actors operating qualifying equipment on its own wheels for clearing snow/ice, repair, or loading/unloading deicer. Article 3 safety duties and applicable incorporated motor-carrier safety rules remain; a private snow contractor is not inferred eligible.
Forest & biomass movements
The healthy-forest program requires a qualifying cooperative forest-health or fuel-reduction effort, natural forest/biomass cargo, the exact Class A/tridem configuration, ADOT-maintained state/federal route, engineering and traffic review, and bridge analysis. It is not a general timber or agricultural exemption.
Named cargo & emergency programs
Spent-nuclear casks, emergency-response vehicles, marked military equipment/material, and bulk milk are named non-reducible-program inclusions only within R17-6-103(I). Authenticate the exact cargo/vehicle class, markings or mission facts, applicant, route, axle/bridge facts, and issued authorization; the label alone grants no movement right.
Towing permits
Towing rules are scoped by exact disabled/transported vehicle, tow method, safety equipment, operator/licensing facts, distance, route, and any special permit. Do not apply a towing exception to ordinary load transport or infer it from a wrecker commodity label.
Agricultural equipment
Agriculture and husbandry require clause-by-clause matching. The § 28-1098(C) boundary is a vehicle used for agricultural purposes on a farm; subsection A(3) only addresses incidental leaves/stems. Husbandry, forage/fiber projections, transporter, weight, forest, and permit provisions have separate facts and route scopes. Never treat 'agricultural' as a universal exemption.
BEFORE THE TRUCK ROLLS
Turn the estimate
into a permitted move.
Confirm the loaded measurements, carrier details, travel dates and exact pickup and delivery. We can help coordinate permits, escorts and route surveys around those facts.
THE SOURCE RECORD
Official references.
Read the rule behind each requirement. These are dated references; current restrictions and the issued permit control your move.
- 0117 A.A.C. 6, pages 6-7 — Threshold Dimensions and Table 1
R17-6-102 and Table 1 · Page 1
Source record: - 02
- 03
- 04
- 05A.R.S. § 28-1095 — Vehicle length; exceptions; permits; rules; definitions
A.R.S. § 28-1095
Source record: - 06A.R.S. § 28-1097 — Maximum load extensions; length limitations for pole trailers
A.R.S. § 28-1097
Source record: - 0717 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-101(B) · Page 5
Source record: - 0817 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-211(A)-(D) · Page 16
Source record: - 0917 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-102, Table 1 · Page 8
Source record: - 10
- 11A.R.S. § 28-1100 — Vehicles and loads; gross weight restrictions; exceptions
A.R.S. § 28-1100
Source record: - 12
- 1317 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-412 and Table 4 · Page 36
Source record: - 14
- 15A.R.S. § 28-1103 — Excess size and weight special permits; definition
A.R.S. § 28-1103
Source record: - 16
- 17
- 1817 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-201(A)-(C) · Page 12
Source record: - 1917 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-411(A)-(D), Illustration 3, Tables 3.01-3.09 · Page 25
Source record: - 20
- 2117 A.A.C. 6 — Class C Oversize and Overweight Special Permit excerpt
R17-6-211 · Page 1
Source record: - 22
- 23Oversize/Overweight Class C Permit Application 70-9901 R04/25
Form 70-9901 R04/25 · Page 1
Source record: - 2417 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-106 · Page 10
Source record: - 2517 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-502(A)-(C) · Page 74
Source record: - 2617 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-103(A)-(I) · Page 9
Source record: - 2717 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-104(A)-(I) · Page 10
Source record: - 28
- 29ADOT Class A oversize/overweight — eligibility and fees
ADOT Class A oversize/overweight — eligibility and fees
Source record: - 30Arizona Administrative Code 17 A.A.C. 6 — escort, projection and travel rules
Arizona Administrative Code 17 A.A.C. 6 — escort, projection and travel rules
Source record: - 31Arizona Administrative Code 17 A.A.C. 6 — escort, projection and travel rules
Arizona Administrative Code 17 A.A.C. 6 — escort, projection and travel rules
Source record: - 3217 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-401(A)-(H) · Page 22
Source record: - 3317 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-402(A)-(E) · Page 22
Source record: - 3417 A.A.C. 6 — Holiday Transport Restriction excerpt
R17-6-402 through R17-6-404 · Page 1
Source record: - 35
- 3617 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-404(A)-(D) · Page 23
Source record: - 3717 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-405(A)-(B) · Page 24
Source record: - 3817 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-303(A)-(D) and Illustration 2 · Page 19
Source record: - 3917 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-308 · Page 22
Source record: - 40A.R.S. § 28-1098 — Vehicle loads; restrictions; exception; civil penalties
A.R.S. § 28-1098
Source record: - 4117 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-301 · Page 17
Source record: - 4217 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-102(D)-(F) · Page 7
Source record: - 43A.R.S. § 28-1144 — Issuing envelope permits; restrictions; requirements
A.R.S. § 28-1144
Source record: - 4417 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-505(A)-(B) · Page 76
Source record: - 45
- 4617 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-205(A)-(E) · Page 13
Source record: - 4717 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-206 and Table 2 · Page 14
Source record: - 4817 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-210(A)-(F) and Table 5 · Page 15
Source record: - 4917 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-507(A)-(B) · Page 76
Source record: - 50
- 5117 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-112(A)-(C) · Page 12
Source record: - 5217 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-207(A)-(D) · Page 15
Source record: - 5317 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-209(A)-(D) · Page 15
Source record: - 5417 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-212(A)-(D) · Page 17
Source record: - 55
- 5617 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-410(A)-(B) · Page 25
Source record: - 5717 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-409(A)-(B) · Page 25
Source record: - 5817 A.A.C. 6 — Department of Transportation — Oversize and Overweight Special Permits, Supp. 22-2
R17-6-506(A)-(B) · Page 76
Source record: