Interstate 35 | ||||
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Iowa's Interstate Highways with I-35 highlighted in red.
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Route information | ||||
Maintained by Iowa DOT | ||||
Length: | 219.225 mi (352.808 km) | |||
Existed: | ca. September 21, 1958 – present | |||
History: | Under construction 1958–1975 | |||
Major junctions | ||||
South end: | I-35 near Lamoni, Iowa | |||
North end: | I-35 towards Minneapolis-St. Paul | |||
Location | ||||
Counties: | ||||
Highway system | ||||
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Interstate 35 (I-35) is a north–south Interstate Highway in the United States that runs from Laredo, Texas, to Duluth, Minnesota. In Iowa, the highway runs from south to north through the center of the state, roughly parallel to U.S. Highway 69 (US 69) and US 65. It enters the state near Lamoni from Missouri and continues north through the southern Iowa drift plain. In the Des Moines area, I-35 is overlapped by I-80 and the two routes bypass Des Moines to the west and north. I-235, the only auxiliary route of I-35, serves the suburbs and downtown Des Moines; it begins and ends at the two interchanges where I-35 and I-80 meet. Near Mason City and Clear Lake, US 18 and Iowa Highway 27 (Iowa 27) overlap with I-35. Shortly after, US 18 splits off to the west in Clear Lake, while Iowa 27 runs with I-35 until they reach the Minnesota state line.