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The organization was created in 1904 as the Iowa State Highway Commission, an extension of Iowa State College in Ames. In 1913, the commission was spun off from the college and became a government organization. In 1974, the highway commission was folded into a larger transportation department with other modes of transportation.
U.S. Highway 30 (US 30) is a major east–west U.S. Highway which spans 330 miles (530 km) across the state of Iowa. It is the longest primary highway in the state and is maintained by the Iowa Department of Transportation (Iowa DOT). The route in Iowa begins at the Missouri River crossing at Blair, Nebraska, and ends at the Mississippi River ...
The Iowa Department of Transportation is responsible for the day-to-day maintenance of the primary highway system, which consists of Interstate Highways, United States Highways, and Iowa state highways. Currently, the longest primary highway is U.S. Highway 30 at 332 miles (534 km). The shortest highway is Interstate 129 at 0.27 miles (430 m).
Be prepared and check road conditions before you head out. You can check road conditions any time online with the Iowa Department of Transportation's interactive map at 511ia.org or by dialing 511.
Heavy snowfall of up to a foot (30 centimeters), and perhaps more in some spots, was forecast in parts of Iowa, where the state Department of Transportation urged people to delay travel plans.
US 32. → Iowa 32. U.S. Highway 6 (US 6) is an east–west United States Numbered Highway which runs 322 miles (518 km) across the U.S. state of Iowa. The route is signed in places as the Grand Army of the Republic Highway. Like all state highways in Iowa, it is maintained by the Iowa Department of Transportation (Iowa DOT).
Interstate 80 (I-80) is a transcontinental Interstate Highway in the United States, stretching from San Francisco, California, to Teaneck, New Jersey. In Iowa, the highway travels west to east through the center of the state. It enters the state at the Missouri River in Council Bluffs and heads east through the southern Iowa drift plain.
Scenic. On July 1, 2003, the Iowa Department of Transportation transferred control of more than 700 miles (1,100 km) of highway to county and local governments in order to save money and to increase operational efficiency. Most of the highways turned over were short spurs connecting small, rural communities and state parks to the highway system.