Interstate 380 is a 73-mile auxiliary Interstate Highway in eastern Iowa. The route extends from I-80 near Coralville to Waterloo. I-380 connects the cities of Cedar Rapids and Waterloo, the state's s
A view of Cedar Rapids from I-380 during the 2008 flood
Cedar Rapids is a city in Linn County, Iowa, United States, and the county seat. The population was 137,710 at the 2020 census, and was estimated at 137,935 in 2025. making it the second-most populous
Interstate 380 (Iowa)
…a 73-mile (117 km) auxiliary Interstate Highway in eastern Iowa. The route extends from I-80 near Coralville to Waterloo. I-380 connects the cities of Cedar Rapids and Waterloo, the state's second- and sixth-largest cities, respectively, to the Interstate Highway System. Except for its last 1.5 miles (2.4 km) north…