*This information is subject to change without notice* WE CAN NOT AND WILL NOT,
guarantee the accuracy of the information provided below.
Please take notice: There may be updates or other requirements not listed.
CHECK the laws/rules of each State along route before entering each State!
Pilot/Escort Vehicle is
Required (details below on this page.)
On all highways: height exceeds 14'6"-20’ 1 escort w/ height pole (over 20’ 1 escort but not height pole); over 16’ high power & utility companies
must be contacted & must accomopany load or carrier must carry letter of clearance from them. Over 120’ long-1 rear
On 2- lane highways: width exceeds 1/2 roadway up to and including 14'6"-1 front pilot
On 4- lane highways/interstates: Over half tthe roadway; up to & including 14’6” wide-1 rear (or amber light/strobe light)
Over 14’6” to 16’6”wide-1 rear pilot (or amber light/strobe light)
Over 16'6"-18’ wide-1 rear pilot
IOWA GENERAL PROVISIONS FOR OVERSIZE LOAD PERMIT https://forms.iowadot.gov/FormsMgt/External/442052.pdf
DEPARTMENT OF TRANSPORTATION
OFFICE OF MOTOR CARRIER SERVICES
6310 SE CONVENIENCE BLVD.
ANKENY, IOWA 50021
HOURS: MONDAY - FRIDAY 7:00 A.M. - 4:30 P.M Saturday 8:00 A.M. - 4:00 P.M.
|LEGAL LIMITS||ALL HIGHWAY|
|Tridum||42,000 determined by axle spacing|
Federal Bridge Formula applies
|*57' lowboy trailers used exclusively for the transportation of construction equipment when used in a truck-tractor semi-trailer combination.|
4' rear overhang must be flagged during the day and must have a light mounted for night travel.
Iowa Vertical Clearances
Iowa Interstate Clearances
State Rd Clearance map
Which Counties & Cities require Permits
PERMITS VALID FOR:
Single trip permits are valid for five (5) days.
One-half hour before sunrise to one-half hour after sunset, travel allowed 24 hours, 7 days on vehicles not exceeding 11' wide, 100' long or 14'4" high, special lighting requirements required.
Travel permitted Saturday and Sunday all day.
Loads should be broken down as far as possible, may haul components on the same load as long as the load does not cause the over dimension or overweight.
Blades, buckets and counterweights do not have to be removed when the load is just over dimension, if the load is overweight, they must be removed and hauled separately.
INFORMATION NEEDED TO ORDER A WIDE LOAD, OVERSIZE AND HEAVY HAUL
Name of applicant, address, authority number DOT #, load description (tractor and trailer unit, year, make, license number), tractor and trailer length, overall dimensions, gross weight, total number of axles, overhang front and rear, registered weight, origin, destination and route. If overweight will need axle weights, spacings and verification of registration.
ESCORTS FOR WIDELOAD AND OVERSIZED SHIPPING
|When Escorts are Needed||# Escorts|
|On 2-Lane Highways:|
|Width exceeds 1/2 roadway width up to and including 14'6"||1|
|On Interstate system:|
|Width exceeds 14'6" - 16'6"||1|
|On All Highways:|
|Height exceeds 14'6"
(height pole must be carried on the escort vehicle)
|Length exceeds 120'||1|
|Either 1 escort - or 7" high and 7" diameter amber light of 100-candlepower with 360 degree visibility (or strobe light) Mounted on the towing unit is required when:|
|Height over 14'6"||1 (allow at least 3" clearance to actual height of restrictions on the route)|
|Applications for width over 16'||Needs detailed route survey|
|Height over 17', must provide a letter from utility companies stating their knowledge of move and approval to disturb aerial lines across the route. If no aerial line exists, must have a statement that entire route has been checked and no utilities are affected.|
|Front-end projection exceeds 25'|
|Rear-end projection exceeds 10' (amber revolving light or strobe light must be on the rear of the load when rear-end projection exceeds 10')|
|Weight exceeds 80,000 lbs|
|Some super loads: Require Iowa DOT officer as escort - charge is $250/day maximum ($25 required time and $40/hr. for overtime). Need to schedule several days in advance.|
|Special lighting can be used in lieu of an escort if travel is on certain roads. For a list of these roadways, call 515-237-3274.|
Des Moines I-235 prohibited travel from 7:00 - 9:00 a.m. and from 4:00 - 6:00 p.m. Monday through Friday , roads must be clear and must have ¼ mile visibility in order to travel.
*CONTACT STATE FOR ADDITIONAL INFORMATION ON RESTRICTED TRAVEL FOR WIDELOADS, OVERSIZED AND OVERWEIGHT PERMITTED CARGO.
SPRING WEIGHT RESTRICTIONS
At the discretion of the Motor Carrier Services Division
Super Loads, Overweight, Oversized, Wide Load
Loads 120' long, 18' high, 18' wide and over 156,000 lbs (20,000 lbs per axle maximum), a diagram is required at the discretion of the department. Axle spacings are required. Allow at least 2 days to process the application.
IOWA GENERAL PROVISIONS FOR OVERSIZE LOAD PERMIT http://www.iadotforms.dot.state.ia.us/iowadotforms/GetTemplate.aspx?did=448
State of Iowa, the Iowa Department of Transportation and any other
permit issuing authority assume no responsibility for the property of
the permit holder.
During movement under permit, the permit holder must meet the terms and conditions of the permit and must take all reasonable precautions to protect and
safeguard the lives and property of the traveling public and adjacent property owners. A copy of a current certificate of public liability insurance in the amounts of
$100,000 bodily injury each person, $200,000 bodily injury each occurrence, and $50,000 property damage must be carried in the vehicle for which the permit
has been issued. Nothing shall exempt the permit holder from compliance with any load limitations which have been or might be established on any bridge or
road that is posted with embargo signs. The permit and any revisions will be void if the actual weights or dimensions exceed what is indicated on the permit or its
revisions. Permits can be issued only for loads that are a single article that cannot be reasonably broken down to make it legal in size and weight.The permit
must be carried in the cab of the vehicle for which it has been issued and be available for inspection.
Movement is allowed seven 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 which include holidays that fall on Monday, except as provided for in Section 321.457 of the Code.
Any reportable accident involving a vehicle operating under permit must be reported in writing to the Director of the Office of Motor Carrier Services, P.O. Box
10382, Des Moines, IA 50306-0382.
Escort Requirements - Escorts must be at least 18 years old, possess a valid Class A, B, C or D driver's license, and carry proof of public liability insurance in
the amounts of $100,000/$200,000/$50,000. The escort vehicle must be approximately the size of a normal passenger automobile or pickup and must have an
amber revolving light. The light must be at least 7" high and 7" in diameter, with at least a 100-candlepower lamp providing 360º warning (or a strobe light), and
be mounted on top of the escort vehicle which must be burning while escorting a permit load. An 18" square red flag must be on each corner of the front bumper
of the vehicle.
-- A rear escort is required when vehicle length exceeds 120 feet.
-- 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 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.
-- 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 front escort with mounted height pole is required when height exceeds 14 feet 6 inches up to and including 20 feet. An escort but no height pole is required
after 20 feet.
Lighting Requirements - An amber revolving light at least 7 inch high and 7 inch in diameter with at least a 100-candlepower lamp providing 360 degree
warning (or strobe light) visible from front and rear, mounted on the towing unit is required when: Length exceeds 85 feet up to and including 120 feet OR Frontend
projection exceeds 25 feet OR Rear-end projection exceeds 10 feet OR Weight exceeds 80,000 pounds. An escort can be used in lieu of amber light.
Signs and Flags - Signs and flags are required when a vehicle and load exceeds 75 feet in length, 8 feet 6 inches in width, and/or 14 feet 6 inches in height. In
addition flags are required when the vehicle rear projection exceeds 4 feet. A sign reading "Oversize Load" must be at least 18 inches high by 7 feet long with a
minimum of 12 inch black letters with a 1-1/2 inch stroke, on a yellow background, and mounted on the front bumper and on the rear of the load. A rear sign for
mobile homes must be mounted at least 7 feet above the highway surface, measuring from the bottom of the sign. Flags must be red or orange fluorescent and
at least 18 inches square must be mounted as follows: one flag at each front corner of the towing unit and one flag at each rear corner of the load. In addition,
there must be a flag at any additional protrusion in the width of the load. The signs or warning devices must be mounted so they can be removed or covered
when the vehicle is within legal dimensions.
Definition of sufficient shoulder - A gravel or paved surface extending a minimum of 6 feet beyond the edge of the roadway.
Requirements for Continuous Moves - Vehicles and loads may travel by permit between 1/2 hour after sunset and 1/2 hour before sunrise if, in addition to the general provisions and general requirements specified by the permit, the following conditions are met.
a. Dimensions shall not exceed:
(1) Width. 11 feet.
(2) Height. 14 feet, 4 inches.
(3) Length. 100 feet.
(4) Weight. Permitted axle limits.
b. Travel must be on roadways with a minimum width of 22 feet and minimum lane width of 11 feet.
c. Safety lighting shall be provided at the widest part of a load. The lamps may be placed at the outer ends of the load itself or on appurtenances which are
equal in width to the widest part of the load and positioned at both extreme front and rear of the vehicle or trailer as follows:
(1) One lighted red lamp on each side at the rear of the load.
(2) One lighted yellow or amber lamp on each side at the front of the load.
Telephone number for more information (515) 237-3264.
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