Interstate 29 in Iowa

Interstate 29 Main route of the Interstate Highway System
Maintained by Iowa DOT
Iowa's Interstate Highways with I-29 highlighted in red.
Length:	152 mi[1] (244.62 km)
South end:	I-29 in Missouri
Major junctions:	IA 2 near Percival US 34 near Glenwood I-80 overlap at Council Bluffs I-480 / US 6 at Council Bluffs I-680 overlap US 30 at Missouri Valley I-129 / US 20 / US 75 at Sioux City
North end:	I-29 in South Dakota
Counties:	Fremont, Mills, Pottawattamie, Harrison, Monona, Woodbury
Iowa State Highways < IA 28 US 30 >

In the U.S. state of Iowa, Interstate 29 is a north–south Interstate Highway traversing closely parallel to the Nebraska state line. Interstate 29 passes through the Omaha-Council Bluffs and the Sioux City areas. Interstate 29 follows a corridor that is generally within 5 miles (8.0 km) of the Missouri River throughout Iowa. Between Council Bluffs and Sioux City, I-29 replaced U.S. Route 75 as the major route in western Iowa. US 75 has since been relocated, south of Sioux City, into Nebraska.

Route description

Interstate 29 enters Iowa near Hamburg and intersects Iowa Highway 333, which links I-29 with U.S. Route 275. Traveling to the northwest, it intersects Iowa Highway 2 and then turns north. Near Pacific Junction and Glenwood, I-29 overlaps with U.S. Route 34. North of Glenwood, I-29 and U.S. Route 275 run concurrently towards Council Bluffs. At Iowa Highway 92, the US 275 concurrency ends. Just north of that interchange, I-29 and Interstate 80 overlap through the southern portion of Council Bluffs. North of the split from I-80, I-29 meets Interstate 480/U.S. Route 6 in western Council Bluffs, where I-480 ends.

Interstate 29 travels north from Council Bluffs and meets Interstate 680 with which it overlaps for 9 miles (14 km) between Crescent and Loveland. I-680 is a cut-off route for Des Moines-to-Sioux City travelers. I-29 meets U.S. Route 30 at Missouri Valley and Iowa Highway 175 at Onawa. At Sergeant Bluff, I-29 intersects what was called Iowa Highway 378, which connected I-29 to the Sioux Gateway Airport. At Sioux City, I-29 meets U.S. Route 20/U.S. Route 75, which is also the eastern terminus of Interstate 129. Closer to downtown Sioux City, I-29 meets the end of U.S. Route 77, which barely enters Iowa. Just north of the Iowa Highway 12 interchange is the South Dakota border at the Big Sioux River.

Exit list

This section contains a table that is missing mileposts for one or more junctions. Please help by adding the missing mileposts.

County	Location	Mile	#	Destinations	Notes
Fremont			1	IA 333 east – Hamburg
			10	IA 2 – Sidney, Nebraska City
			15	CR J26 – Percival
			20	CR J24 – McPaul, Thurman
			24	CR L31 – Bartlett, Tabor	Connects to Fremont CR J10
Mills			32	US 34 west – Pacific Junction, Plattsmouth	South end of US 34 overlap; connects to Mills CR L35
			35	US 34 east / US 275 south – Glenwood, Red Oak	North end of US 34 overlap; south end of US 275 overlap
			42	IA 370 west  – Bellevue	Serves Offutt Air Force Base; connects to Mills CR H10
Pottawattamie	Council Bluffs		47	US 275 north / IA 92 – Lake Manawa	North end of US 275 overlap.
			48	I-80 east – Des Moines	South end of I-80 overlap
			3	IA 192 north (South Expressway) – Lake Manawa
			1B	South 24th Street
			51	I-80 west  – Omaha	North end of I-80 overlap
			52	Nebraska Avenue
			53A	9th Avenue, Harrah's Boulevard
			53B	I-480 west / US 6 west  – Omaha	Northbound left exit; no exit to US 6 east; servesEppley Airfield
			54A	Avenue G	Southbound exit and entrance only
			54B	North 35th Street	Northbound exit and entrance only
			55	North 25th Street
			56	IA 192 south	Southbound left exit and northbound entrance only.
			61	I-680 west / CR G37 east – Crescent – North Omaha	South end of I-680 overlap. Exits signed 61A (eastbound) and 61B (westbound).
			66	Honey Creek
			71	I-680 east – Des Moines	North end of I-680 overlap
			72	Loveland	Pottawattamie CR G12 (west) and G14 (east)
Harrison			75	US 30 – Missouri Valley, Blair
			82	CR F50 – Modale
			89	IA 127 east – Mondamin
			95	CR F20 – Little Sioux
Monona			105	CR K45 – Blencoe
			112	IA 175 – Onawa, Decatur
			120	CR E24 – Whiting
Woodbury			127	IA 141 east – Sloan
			134	Salix	Woodbury CR K25
			135	Port Neal Landing	Woodbury CR D51
	Sergeant Bluff		141	CR D38 – Sergeant Bluff, Sioux Gateway Airport
	Sioux City		143	US 75 Bus. (Singing Hills Boulevard)
			144	I-129 west / US 20 / US 75 – Le Mars, Fort Dodge, South Sioux City	Signed as exits 144A and 144B
			147A	Floyd Boulevard
			147B	US 20 Bus.
			148	US 20 Bus. (Wesley Parkway (IA 12)) / US 77 south  – South Sioux City	Northbound exit only
			149	US 20 Bus. (Wesley Parkway (IA 12)) / US 77 south / Hamilton Boulevard  – South Sioux City	Southbound exit only for US 20 Bus./US 77
			151	IA 12 north (Riverside Boulevard) – Akron

References

• The Iowa Highways Page (I-29)

Interstate 29
Previous state: Missouri	Iowa	Next state: South Dakota