Arizona Administrative Code › Title 17 - TRANSPORTATION › Chapter 6 - DEPARTMENT OF TRANSPORTATION OVERSIZE AND OVERWEIGHT SPECIAL PERMITS › Article 1 - GENERAL PROVISIONS › Table 1 - Threshold Dimensions

Current through Register Vol. 30, No. 28, July 12, 2024
The Department may issue an applicable class of special
				  permit, as provided under Article 2, for transporting on the State Highway
				  System a vehicle, combination of vehicles, or vehicle and load combination
				  exceeding any of the following maximum limits:
Width (A.R.S. §
														28-1093
							 )
Height (A.R.S. §
														28-1094
							 )
8' 6" (8' if the maximum width of the route is
							 further restricted under
							 R17-6-412,
							 Table 4)
14' (13' 6" if the maximum height of the route is
							 further restricted under
							 R17-6-412,
							 Table 4)
Length (A.R.S. §§ 28-1095 and
							 28-1097 and
							 23 CFR
							 658.13 )
Legal for travel on the State Highway System, the
							 Interstate Highway System, the federally-designated National Network of
							 highways and routes listed under 23 CFR 658, App. A, and other highways and
							 routes located within ten miles of an Interstate highway.
Overhang
Front of vehicle
Rear of vehicle or trailer
3'
6'
Straight truck
40'
Bus, or recreational vehicle as defined in A.R.S. §
													41-4001(30)(b),
							 if non-articulated
45'
Truck equipped with a conveyor bed and used solely
							 as a fiber and forage module mover
48'
Truck tractor - semitrailer combination
Truck-tractor - semitrailer - forklift
							 combination
National Network
57' 6" semitrailer
Truck tractor - semitrailer combination
Truck-tractor - semitrailer - forklift
							 combination
All other highways and routes of the State Highway
							 System
53' semitrailer; or 65' overall combination if
							 semitrailer is more than 53'
Truck tractor - semitrailer - trailer
							 combination
Truck tractor - semitrailer - semitrailer combination
							 (B-train)
28' 6" per semitrailer or trailer; or
65' overall combination
Truck - trailer combination
Truck - forklift combination
Truck - semitrailer combination
28' 6" trailer; or
65' overall combination
Bus or trolley coach, if articulated
60' overall combination
Pole trailer with non-reducible load (e.g., poles,
							 pipes, structural material, etc.)
80' cargo carrying length
Vehicle or boat transporter combination
							 (stinger-steered)
*Measurement of overall combination excludes
							 extendable ramps and an overhang allowance of 4' to the front of the vehicle
							 and 6' to the rear of the semitrailer
80' overall combination*
Towaway trailer transporter
							 combination
82' overall combination
Drive-away saddlemount vehicle transporter
							 combination with up to three saddlemounted vehicles (may include one
							 fullmount)
97' overall combination
Weight (A.R.S. §§ 28-1099 and
							 28-1100 and
							 23 U.S.C. §
															127 )
Legal for travel on the State Highway System, the
							 Interstate Highway System, the federally-designated National Network of
							 highways and routes listed under 23 CFR 658, App. A, and other highways and
							 routes located within ten miles of an Interstate highway. Legal weight shall be
							 determined using the listed limits or the manufacturer's weight rating,
							 whichever is less.
Steering axle
20,000 lbs.
Single axle
20,000 lbs.
Single axle for a motor home; over-the-road bus; or
							 vehicle regularly and exclusively used as an intrastate public agency transit
							 passenger bus
24,000 lbs.
Towaway trailer transporter
							 combination
26,000 lbs. overall combination
Vehicle combination of five axles or more with axle
							 group weights computed using the formula prescribed under A.R.S. §
													28-1100(A)(4)
80,000 lbs. overall combination
An electric powered vehicle or a vehicle with an
							 engine fueled primarily by natural gas may exceed any vehicle weight limit (up
							 to a maximum gross vehicle weight of 82,000 pounds) as provided under
							 23 U.S.C.
							 127, by an amount that is equal to the
							 difference between the weight of the vehicle attributable to the electric
							 battery system, or the natural gas tank and fueling system carried by that
							 vehicle, and the weight of a comparable diesel tank and fueling
							 system.