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Simplify Your Oversize/Overweight Loads
Dimensions: Width: 8' 6" Height: 13' 6"' Length Overall : Single Vehicle 41' Trailer 53' Trailer 57' Lowboy Legal Overhang: Front 4', Rear
Weights: Single Axle: 20,000 lb. Tandem axle: 34,000 lb. Tridem: 42,500 lb. Max Gross Weight: 80,000
Iowa Permit Department Contact Information
515-237-3264
Fax: 515-237-3257
8:00 AM - 4:30 PM Central
Width:
A rear escort is required when the width of the vehicle and load is over 16 feet 6 inches and travel is on 4 lane roadways.
A front escort is required when: Width is up to and including 14 feet 6 inches and exceeds one-half the roadway and travel is on 2 lane roadways with lane width less than 12 feet OR Width is up to and including 14 feet 6 inches and exceeds one-half the roadway and travel is on 2 lane roadways with lane width 12 feet or more without sufficient shoulders OR Width is over 14 feet 6 inches and travel is on 2 lane roadways.
A front escort - or an amber light or strobe light on the power unit and on the rear extremity of the vehicle or load, when width is up to and including 14 feet 6 inches and exceeds one-half the roadway and travel is on 2 lane roadways with lane width 12 feet or more with sufficient shoulders. A rear escort or an amber light or strobe light on the power unit and on the rear extremity of the vehicle or load when width exceeds one-half the roadway up to and including 16 feet 6 inches and travel is on 4 lane roadways
Length
A rear escort is required when vehicle length exceeds 120 feet
Single axle – 20,000 pounds
Tandem axle – 34,000 pounds
Maximum gross weight of 80,000 pounds
Single axle – 20,000 pounds
Tandem axle – 34,000 pounds
Maximum gross weight up to 86,000 pounds for a five-axle tractor/spread axle semitrailer transporting livestock
Maximum gross weight up to 90,000 pounds for six-axle vehicles
Maximum gross weight up to 96,000 pounds for seven or more axle vehicles
Single axle – 20,000 pounds
Tandem axle – 34,000 pounds
Maximum gross weight up to 86,000 pounds for a five-axle tractor/spread axle semitrailer transporting livestock
Maximum gross weight up to 90,000 pounds for six-axle vehicles
Maximum gross weight up to 96,000 pounds for seven or more axle vehicles
For movement under an annual oversize/overweight permit, the gross weight on any axle shall not exceed 20,000 pounds, with a maximum of 156,000 pounds total gross weight.
Multitrip Permits
For movement under a multitrip permit, the gross weight on any axle shall not exceed 20,000 pounds with a maximum of 156,000 pounds total gross weight.
Registration Trip Permit
If your truck is currently plated outside Iowa, you may purchase an IRP permit to operate in Iowa. The permit is valid for 72 hours, and must be obtained and placed in the vehicle before entering Iowa.
Trip permits cannot be used to meet registration requirements of any over dimensional or overweight load permits.
Temporary Fuel Permit
Non-IFTA affiliated vehicles may need to purchase temporary fuel permits to travel through certain states that are members of the IFTA. In Iowa, a temporary fuel permit is valid for one trip or 72 hours (whichever comes first). Upon departure from the state, a new permit is required before re-entering.
Contact Iowa Truck Services at 515-244-5193 for more information on permits.
Iowa has a sliding scale of fines for overweight conditions that increase every 1000 lb. over the maximum permitted weight. Beginning at:
1 to 1,000 lb. overweight the fine is $6.00
to
20,000 lb the fine is $1,100 + $.05 per pound in excess of 20,000
Warning Lights
A flashing or strobe amber must be mounted on the towing unit.
Safety Lighting:
Lighted amber lights at the forward corners,
Lighted red lights if the rear.
A vehicle over 12' up to and including a width of 16' 6 may use an amber or strobe light on the cab of the power unit and on the rear extremity of the vehicle or load.
"Oversize Load" Banner
For all oversize loads, an “Oversize Load" sign must be used. Size: Length - 7", height 18" Letters: Black, 10" (min), 1.5" stroke Background: Yellow
Flag Requirements
Red
or orange fluorescent flags at least 18ʺ square, must be mounted at
each front corner of the towing unit and at each rear corner of the
load.
Running Hours
Movement permitted from 1/2 hr. before sunrise to 1/2 hr. after sunset, 7 days a week except for designated holidays and for special events when abnormally high traffic counts can be expected.
The designated holidays are Memorial Day, Independence Day, and Labor Day. No movement will be allowed on these holidays or after 12 noon on days preceding these holidays and holiday weekends that include holidays falling on Monday, except as provided for in Iowa Code 321.457.
24-hr continuous movement permitted for vehicles with dimensions that do not exceed: Width 11', height 14' 6'Length 100', and weight within legal limits.
No person shall operate or move on a paved highway any motor vehicle, trailer, or semitrailer having any metal tire or metal track in contact with the roadway.
1. Any pneumatic tire on a vehicle shall be considered unsafe if it has:
a. Any part of the ply or cord exposed.
b. Any bump, bulge or separation.
c. A tread design depth of less than one-sixteenth of an inch measured in any two or more adjacent tread grooves, exclusive of tie bars or, for those tires with tread wear indicators, worn to the level of the tread wear indicators in any two tread grooves.
d. A marking “not for highway use”, “for racing purposes only”, “unsafe for highway use”.
e. Tread or sidewall cracks, cuts or snags deep enough to expose the body cord.
f. Such other conditions as may be reasonably demonstrated to render it unsafe.
g. Been regrooved or recut below the original tread design depth, excepting special tires which have extra under tread rubber and are identified as such, or if a pneumatic tire was originally designed without grooves or tread.
Maximum weight per inch of tire width: 575 pounds, except on a steering axle, which case 600 per inch of tire width is permitted based on the tire width rating.
Tire chains of reasonable proportions permitted upon any vehicle when required for safety because of snow, ice, or other conditions tending to cause a vehicle to skid.
Studded Tires: Pneumatic tires with tire studs projecting not more than 1/16 in. beyond the tread are permitted from November 1 of each year to April 1 of the following year.
You can also find other Road Restrictions Maps here: https://iowadot.gov/mvd/motorcarriers/maps
At the discretion of the Motor Carrier Services Division. Seasonal weight embargoes and temporary or permanent bridge weight limits must be signed and posted by the governing agency (jurisdiction).
Editor's Note:
Specific guidance on seasonal restrictions are vague, and it appears
that operators must be alert for closures.
For information on restrictions, call the Iowa DOT, Motor Carrier Services, at 515-237-3264.
Maximum Dimensions:
Not valid for interstate travel (state roads only)
Cost: Annual OS/OW - $ 400
OS $50
Time, it takes to receive: 1 business day
Need to obtain a route? YesFrom March to November, or whenever the weather permits, Iowa may have up to 500 work zones in operation, whether it is bridge demolition, highway constructions, pavement repairs or something else that needs attending.
There are occasions when that number increases and there can be up to a 1000 work zones near cities and counties so the state of Iowa urges motorists to be careful when driving through these zones.
It is of essence to reduce speed, respect the signals and maintain calm if issues arise.
These work zones require extra caution on the part of drivers, so they need to pay close attention to the movements of traffic around them, as well as the location of road workers whose jobs often put them extremely close to traffic.
No specific laws in regards to mobile home transportation.
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Email: [email protected]