Heavy haul truck hauling an oversized load in Iowa

Quickway Transports

Iowa Oversize & Overweight Permits for Heavy Haul

Name: Quickway Transports
Address: 1271 West Main St, Riverhead, NY, 11901, US
Telephone: +1 (631) 898-4248

Iowa permit rules, legal limits and escort triggers, and how we book heavy haul carriers for moves in and through the state.

Quick answer

Do I need a permit to move an oversize load in Iowa?

Yes, once the load is wider than 8 ft 6 in, taller than 13 ft 6 in or heavier than 80,000 lbs on the Interstate. Iowa DOT issues permits through IAPS for $35 per single trip, valid 5 days, and an overweight single trip can add a registration charge of $4 for each ton over 40 tons. State permits cover primary highways only.

Updated November 2026 by the Quickway Transports broker team (FMCSA MC# 1245224).

Heavy Haul | IA

Heavy haul and oversize freight in Iowa

Iowa's oversize freight is farm country and factories: tractors, combines and grain equipment, wind turbine components, and machinery from plants around Des Moines, Cedar Rapids, Waterloo and the Quad Cities. I-80 crosses the state from Council Bluffs through Des Moines to Davenport, I-35 runs north to Minnesota and south toward Kansas City, and I-29 follows the Missouri River on the west. We book carriers for moves within Iowa or across it.

Iowa's calendar rules are narrow but strict. Only Memorial Day, Independence Day and Labor Day restrict travel, but each one closes the whole holiday weekend from noon the day before. Iowa DOT permits also stop at the primary road system, and in spring counties post their own weight embargoes on secondary roads, so a farm or job site pickup is checked against county limits before we quote.

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What are the legal size and weight limits in Iowa?

Under the oversize load regulations in Iowa, a load above any of these limits needs a state oversize or overweight permit.

Width	8 ft 6 in
Height	13 ft 6 in
Semitrailer length	53 ft
Gross weight	80,000 lbs
Single axle	20,000 lbs
Tandem axle	34,000 lbs

Limits are set by Iowa Code 321.454 to 321.463. Off the Interstate, CDL-operated six-axle vehicles may run up to 90,000 lbs and seven-axle vehicles up to 96,000 lbs.

Who issues Iowa oversize permits?

Permits come from Iowa DOT's Office of Vehicle & Motor Carrier Services, based in Ankeny, through IAPS, where annual and many trip permits are system-issued and the average turnaround is about four hours. A single trip permit is good for one trip over 5 days, and the clearances and bridges on the route set how wide, tall and long the load can be.

Iowa DOT permits cover the primary road system: Interstate, US and Iowa routes, including their city extensions. County roads and city streets need local permits, and a state permit does not override a posted bridge or embargo limit unless it says so, so the carrier's permit service checks both.

Permit system: Iowa's Permitting System (IAPS)

What do Iowa oversize and overweight permits cost?

request_quote Single trip: $35, or $70 for a round trip on the same route within 5 days.
request_quote Overweight single trips can add a registration fee of $4 per ton over 40 tons of combined gross weight.
request_quote Multi-trip permit for one route over 60 days: $200.
request_quote Annual permits: $50 for oversize, $400 for oversize and overweight, $500 for all-systems overweight.
request_quote Escort service from a permit authority is capped at $250 per day per person and car, and tree trimming or sign removal is billed at cost.

Worked example: a 120,000 lb single trip not registered for its full weight

The combination weighs 60 tons, 20 tons over the 40-ton threshold, so the registration charge is 20 x $4 = $80 on top of the $35 permit, or $115. A truck already registered in Iowa for the full weight pays only the $35, and escorts and county permits are extra either way.

Iowa pilot car and escort requirements

local_police Up to 12 ft wide: no escort, only signs and flags.
local_police Over 12 ft to 14 ft 6 in wide: one escort, behind on four-lane and ahead on two-lane highways, or amber warning lights on the truck and load instead.
local_police Over 14 ft 6 in to 18 ft wide: a rear escort on four-lane roads and a front escort on two-lane roads; amber lights can stand in only on four-lane roads up to 16 ft 6 in.
local_police Over 14 ft 6 in high: a front escort with a measuring pole, and past 16 ft, advance contact with the utilities on the route.
local_police Over 120 ft long: a rear escort on every road.
local_police Civilian escorts may not stop traffic; that takes an on-duty officer, and State Patrol escorts need a week's notice.

What hours can oversize loads move in Iowa?

calendar_today Permitted loads move in daylight seven days a week, and not while ice or snow covers the road or visibility drops below a quarter mile.
calendar_today Night movement is allowed for loads up to 12 ft wide, 14 ft 6 in high and 100 ft long at legal axle weights, on roads at least 22 ft wide, with extra lamps at the widest point.
calendar_today Holidays: Memorial Day, Independence Day and Labor Day close movement from noon the day before the holiday weekend until just before sunrise after it.
calendar_today Thanksgiving, Christmas and New Year's Day carry no movement restriction in Iowa.
calendar_today There is no statewide urban curfew, but IAPS prints route-specific time limits, such as rush-hour areas, on the permit.

Seasonal weight limits in Iowa

Iowa's spring limits come mostly from counties. Each county may embargo its roads, capped at 90 days a year and binding once signs go up, most often from late February into May, at limits such as 5 tons gross on Linn County rock roads, and Iowa DOT posts spring pavement restrictions on primary segments for trucks over 80,000 lbs. A state permit does not lift an embargo, and local embargo permits mostly cover farm produce, feed and heating fuel.

FAQ

Iowa Oversize Load Questions

Permits, escorts and travel rules for oversize moves in Iowa.

How much is an Iowa oversize permit?

Iowa DOT charges $35 for a single trip permit, or $70 for a round trip on the same route within 5 days. Overweight single trips can also carry a registration charge of $4 per ton over 40 tons when the truck is not registered for the full weight. A 60-day multi-trip permit for one route costs $200.

Can oversize loads travel at night in Iowa?

Some can. Continuous movement is allowed for loads up to 12 ft wide, 14 ft 6 in high and 100 ft long with legal axle weights, on roads at least 22 ft wide and with lamps marking the widest point. Larger loads move in daylight, and the permit can add lighting or escorts for any night move.

Which Iowa holidays stop oversize loads?

Only three: Memorial Day, Independence Day and Labor Day. Around each one, travel ends at noon the day before the holiday or its weekend and starts again shortly before sunrise once it is over, so a Monday holiday closes Friday afternoon through Monday. Thanksgiving, Christmas and New Year's Day are open for travel.

When does an Iowa load need an escort?

Width starts the escort rules above 12 ft: one escort, in front on two-lane roads or behind on four-lane roads, with amber lights allowed instead up to 14 ft 6 in. A front pole car is needed above 14 ft 6 in tall, and a rear escort beyond 120 ft long. Civilian escorts cannot stop traffic.

Do Iowa permits cover county roads?

No. Iowa DOT permits cover Interstate, US and Iowa routes, while county roads and city streets need permits from those authorities, except roads valid for an all-systems permit. In spring, county embargoes can also cut weights on secondary roads, and a state permit does not override them.

Sources

We last checked the figures above against these official sources in October 2026. Before each move, the carrier's permit service confirms the rules in force that day.

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