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Permits by state
What ADOT requires before an oversize or overweight load moves on Arizona state highways: legal limits, Class A permits and fees, escorts, night and weekend rules, metro curfews and holiday shutdowns. Sourced from ADOT and Arizona Administrative Code Title 17, Chapter 6.
Last verified: against official state sources.
The numbers
| Dimension | Legal limit (R17-6-102, Table 1) |
|---|---|
| Width | 8 ft 6 in (8 ft where restricted under Table 4) |
| Height | 14 ft (13 ft 6 in where restricted under Table 4) |
| Length | Straight truck 40 ft; semitrailer 57 ft 6 in on the National Network, 53 ft (or 65 ft overall if longer) on other state highways; doubles 28 ft 6 in per trailer or 65 ft overall |
| Overhang | 3 ft front, 6 ft rear |
| Weight | 20,000 lb single/steering axle; 80,000 lb overall for five-plus axle combinations (axle groups by A.R.S. 28-1100 formula), or the manufacturer rating if lower |
Exceeding any of these on the State Highway System requires an ADOT special permit.
Sources: Ariz. Admin. Code R17-6-102, Table 1 (PDF); 17 A.A.C. 6 (PDF, AZ Secretary of State). Checked Oct 15, 2026.
Permits
Class A permits cover non-reducible loads up to 14 ft wide, 16 ft high, 120 ft long and 250,000 lb, for a single trip, 30 days or a year, on state routes only. City and county roads need local permits (Phoenix has its own). Larger loads (superloads) need a Class C special permit; Table 4 bridges over 250,000 lb need ADOT Bridge Group analysis. Vehicles must be registered for 80,000 lb.
| Permit | Fee per ADOT |
|---|---|
| Oversize, single trip | $15 |
| Oversize, 30 day | $30 |
| Oversize, annual | $360 |
| Oversize/overweight, single trip | $75 |
| Oversize/overweight, 30 day | $75 |
| Oversize/overweight, annual | $600 |
Fees were supplied from ADOT's permit page but the page could not be re-checked on Oct 15, 2026: verify with the state.
Sources: ADOT: Oversize/Overweight Permits; ADOT Route Restriction Table 4 (PDF). Checked Oct 15, 2026.
Pilot cars
| Situation | Requirement |
|---|---|
| Night/weekend transport (3:00 AM to ½ hr before sunrise), over 11 to 14 ft wide | Rear escort |
| Same period, over 14 to 16 ft wide | Front and rear escort |
| Same period, over 15 ft high | Front escort with height pole |
| Front / rear projection over 20 ft | Front / rear escort |
| Two or more permitted vehicles traveling together | At least one escort per load |
| Table 4 routes | Front/rear and/or law enforcement escorts as listed per segment |
Daylight escort thresholds outside Table 4 are set per permit based on roadway, dimensions, stops, safety and time of travel: verify with the state. DPS escorts: 602-223-2855.
Sources: 17 A.A.C. 6, R17-6-402(D) (PDF); ADOT Escort Vehicle Rules (PDF); ADOT Table 4 (PDF); ADOT: Escort Information. Checked Oct 15, 2026.
When you can roll
Continuous travel is allowed for loads up to 10 ft wide, 14 ft 6 in high, 10 ft front/rear overhang, 120 ft long and 250,000 lb. Loads over 10 to 16 ft wide or over 14 ft 6 in to 16 ft high may run nights and Saturdays/Sundays (non-holiday) from 3:00 AM until ½ hour after sunset, on Table 4 night/weekend routes, keeping 2,000 ft from other oversize loads.
Metro curfews (Phoenix and Tucson): loads over 10 ft wide may not run on listed freeway segments Mon-Fri 7-9 AM and 4-6 PM.
Holidays (New Year's, Memorial Day, July 4, Labor Day, Thanksgiving, Christmas) apply to loads over 10 ft wide, 14 ft 6 in high, 10 ft overhang, 120 ft long or 250,000 lb:
| Holiday falls on | Stop / resume |
|---|---|
| Friday or Saturday | Stop noon Thursday; resume Monday ½ hr before sunrise (3 AM if night-eligible) |
| Sunday or Monday | Stop noon Friday; resume Tuesday ½ hr before sunrise (3 AM if night-eligible) |
| Tue, Wed or Thu | Stop noon the day before; resume the day after ½ hr before sunrise (3 AM if night-eligible) |
Thanksgiving 2026 (Thursday): stop at noon Wed, Nov 25; resume Fri, Nov 27.
Sources: 17 A.A.C. 6, R17-6-401 to 404 (PDF); ADOT Holiday Transport Restrictions (PDF). Checked Oct 15, 2026.
Permit office
14370 W Van Buren Street, Goodyear, AZ 85338. Phone 602-771-2960. Buy online, through a permit service, by mail, or at ports of entry. ADOT Oversize/Overweight Permit Application (PDF); azdot.gov: Oversize/Overweight Permits
Rather not deal with it? Run your load through our permit checker, then call (310) 989-6530.
Quick answers
The legal width in Arizona is 8 ft 6 in, or 8 ft where restricted under Table 4.
The legal height in Arizona is 14 ft, or 13 ft 6 in where restricted under Table 4.
Class A permits cover non-reducible loads up to 14 ft wide, 16 ft high, 120 ft long and 250,000 lb on state routes.
Covered loads stop at noon Wed, Nov 25 and resume Fri, Nov 27.
Call 602-771-2960.
Answers summarize the sourced sections above. Last verified Oct 15, 2026.
Keep reading
For lanes, industries and how we plan Arizona moves, see Heavy Haul Trucking in Arizona. For cross-state answers on pilot cars, legal width and height, superloads and holiday rules, see the Heavy Haul FAQ.
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