Interstate 35 in Iowa

Interstate 35 Main route of the Interstate Highway System
Maintained by IADOT
Iowa's Interstate Highways with I-35 highlighted in red.
Length:	218.33 mi[1] (351.37 km)
South end:	I-35 towards Kansas City, MO
Major junctions:	US 34 at Osceola I-80 near Des Moines US 30 at Ames US 18 / IA 27 near Mason City
North end:	I-35 towards Minneapolis-St. Paul, MN
Iowa State Highways < US 34 IA 37 >

In the U.S. state of Iowa, Interstate 35 runs north–south through the Des Moines area, parallel to US 65 and US 69. Segments of the Interstate Highway overlap with Interstate 80 and Iowa Highway 27, Iowa's designation for the Avenue of the Saints.

Route description

Interstate 35 enters Iowa from Missouri south of Lamoni. It goes north-northeasterly and meets Iowa Highway 2 near Decatur City. It turns north and meets U.S. Highway 34 at Osceola and Iowa Highway 92 west of Martensdale. It continues north, enters the Des Moines metropolitan area and meets the Iowa Highway 5 freeway at West Des Moines. Further on in West Des Moines, at the West Mixmaster Interchange, I-35 meets Interstate 80 and Interstate 235. I-235 serves downtown Des Moines, while I-35 and I-80 overlap and serve the western and northern Des Moines suburbs. On the Clive/Urbandale border, I-35 and I-80 meet U.S. Highway 6. Further north in Urbandale, they meet Iowa Highway 141 and turn eastward. They also meet U.S. Highway 69 north of Des Moines. Between Des Moines and Ankeny, at the East Mixmaster interchange, I-35 and I-80 separate at an interchange where they also meet I-235.

Interstate 35 then turns north to go through Ankeny. It continues north and at Ames meets U.S. Highway 30. Ames is also served by Business Loop 35. I-35 continues north and meets Iowa Highway 175 near Ellsworth and meets the U.S. Highway 20 freeway near Williams. It continues north until the Wright County border, where it turns northeast. On this northeasterly alignment, I-35 meets Iowa Highway 3.

Shortly after meeting Iowa Highway 3, Interstate 35 turns north again and meets U.S. Highway 18 and Iowa Highway 27 near Clear Lake. I-35 overlaps U.S. 18 and Iowa Highway 27 through the Clear Lake area, which is also served with Business Loop 35. U.S. 18 separates in Clear Lake and I-35 and Iowa 27, which serves as the designation in Iowa for the Avenue of the Saints, overlap for the rest of the way to the Minnesota border, meeting Iowa Highway 9 near Hanlontown.

Exit list

County	Location	#	Destinations	Notes
Decatur		4	US 69 – Lamoni, Davis City
		12	IA 2 – Leon, Mount Ayr
		18	CR J20 – Grand River, Garden Grove
		22	CR J14 – Van Wert
Clarke		29	CR H45
	Osceola	33	US 34 – Creston, Osceola
		34	Clay Street – Osceola
		36	IA 152
Warren		43	CR G76 – New Virginia
		47	CR G64 – Truro
		52	CR G50 – St. Marys, St. Charles
		56	IA 92 – Indianola, Winterset
	Cumming	65	CR G14 – Norwalk, Cumming
Polk	West Des Moines	68	IA 5 south – West Des Moines – Des Moines International Airport
		69	Grand Avenue – West Des Moines	Signed as exits 69A (east) and 69B (west)
		70	George Mills Civic Parkway
		72A	I-235 east – West Des Moines, Des Moines
		72B	I-80 west – Council Bluffs, Omaha	South end of I-80 overlap
		72C	University Avenue – Clive
	Clive
	See Interstate 80
	Ankeny	137A	I-235 west – Des Moines
		87A	I-80 east – Davenport	North end of I-80 overlap
		89	Corporate Woods Drive
		90	IA 160 west – Ankeny Industrial Area, Bondurant
		92	1st Street
		96	Polk City, Elkhart
Story	Huxley	102	IA 210 – Maxwell
	Ames	111	I-35 Bus. north / US 30 – Nevada, Ames, Iowa State University	Signed as exits 111A (east) and 111B (west/north)
		113	I-35 Bus. south / 13th Street (I-35 Bus. south) - USDA Veterinary Labs
		116	CR E29
		123	CR E18 – Roland, McCallsburg
	Story City	124	CR E15 – Story City
Hamilton		128	CR D65 – Stanhope, Randall
	Ellsworth	133	IA 175 – Jewell, Eldora
		139	CR D41 – Kamrar
		142	US 20 – Waterloo, Fort Dodge	Signed as exits 142A (east) and 142B (west)
		144	CR D25 – Williams, Ellsworth Community College
		147	CR D20
Wright		151	CR R75 – Woolstock
Franklin		159	CR C47 – Dows
		165	IA 3 – Clarion, Hampton
		170	CR C25 – Alexander
		176	CR C13 – Sheffield, Belmond
Cerro Gordo		180	CR B65 – Thornton
		182	CR B60 – Rockwell, Swaledale
		188	CR B43 – Burchinal
		190	US 18 east / IA 27 east – Charles City, Mason City	South end of US 18/IA 27 overlap
	Clear Lake	193	I-35 Bus. north / CR B35 – Clear Lake, Mason City
		194	US 18 west / I-35 Bus. south / IA 122 – Mason City, Clear Lake	North end of US 18 overlap
		197	CR B20
Worth		203	IA 9 – Manly, Forest City
		208	CR A38 – Joice, Kensett
		214	CR 105 – Lake Mills, Northwood	Former IA 105

References

Interstate 35
Previous state: Missouri	Iowa	Next state: Minnesota