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About The DOT

Transportation Facts

Roadways in Iowa

Roadways

Iowa has 114,997 miles of roadway

  • 9,624 miles of roads owned by the state
  • 89,586 miles of roads owned by the counties
  • 15,787 miles of roads owned by cities
Bridges in Iowa

Bridges

Iowa has 23,684 bridges

  • 4,205 bridges owned by the state
  • 18,225 bridges owned by counties
  • 1,254 bridges owned by cities
Projects let

Construction Lettings

777 highway and bridge projects were let for construction in Fiscal Year 2024.

Project commitments

Project Commitments

More than $1.23 billion was committed to highway, road, street, and bridge projects in Fiscal Year 2024.

Poor bridges

Poor Bridge Reduction

Iowa has reduced the number of poor bridges on the Primary System from 256 in 2006 to 26 in 2023.

Licenses issued

2.6 million

Driver’s licenses and IDs issued in Iowa

Registered vehicles

4.6 million

Registered vehicles in Iowa

Oversize/overweight loads permitted

141,288

Oversize/Overweight loads permitted and routed each year in Iowa

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