Interstate 29 in Iowa

Add links
Route map:
This is a good article. Click here for more information.
Source: Wikipedia, the free encyclopedia.

This article is about the section of Interstate 29 in Iowa. For the entire route, see Interstate 29.
Lewis and Clark Trail
NHSEntire route
Major junctions
South end I-29 near Hamburg
Major intersections
North end I-29 at Sioux City
Location
CountryUnited States
StateIowa
Counties
Highway system
← Iowa 28→ US 30

In the

Interstate Highway which closely parallels the Missouri River. I-29 enters Iowa from Missouri near Hamburg and heads to the north-northwest through the Omaha–Council Bluffs and the Sioux City areas. It exits the state by crossing the Big Sioux River into South Dakota. For its entire distance through the state, I-29 runs on the flat land between the Missouri River and the Loess Hills, and is also part of the Lewis and Clark Trail
.

I-29 was built in sections over a period of 15 years. When there was a shortage of male workers, female workers stepped in to build a 20-mile (32 km) section near Missouri Valley. Between Council Bluffs and Sioux City, I-29 replaced U.S. Highway 75 (US 75) as the major route in western Iowa. As a result of I-29's creation, US 75 south of Sioux City was relocated into Nebraska.

Route description

I-29 enters Iowa south of

US 275.[1]

I-29 is flanked by the Loess Hills

North of Glenwood, I-29/US 275 continue north toward

I-480.[1]

North of Council Bluffs, I-29 passes the eastern terminus of

Iowa 175 interchange at Onawa, passing Little Sioux and Blencoe.[1][3]

I-29 closely parallels the Missouri River in Sioux City.

North of Onawa, I-29 continues northwest for 15 miles (24 km) toward

US 75, which is also the eastern end of I-129.[1]

For the next three miles (4.8 km) north of the I-129 interchange, I-29 runs closely, as close as 200 feet (61 m), to the Missouri River. The Interstate follows the curve of the river and turns to the west. It meets Gordon Drive, which carries

Iowa 12 splits away to the north.[4]

History

2011 Missouri River floods

Construction of I-29 began in the late 1950s in the Sioux City area. The first section to open, a three-mile-long (4.8 km) stretch from the

US 20/US 77 bridge across the Missouri River opened around October 1, 1958. In September 1961, I-29 was extended across the Big Sioux River to South Dakota. On April 1, 1962, some of the northbound directional spans collapsed into the Big Sioux River at the South Dakota state line as a result of flooding and bridge scour.[5][6][7]

North of Council Bluffs, a 20-mile (32 km) section to Missouri Valley opened in November 1958. By December 1967, the two sections were connected, creating 100 miles (160 km) of continuous interstate highway.[2] Due to a shortage of male workers, at least 20 women were enlisted to help build this section of I-29. The women were paid $2.00 hourly (equivalent to $18.86 hourly in 2024[8]), the same wage as men would have earned.[9]

Construction of I-29 in the Council Bluffs area was completed in 1970, and the route was open to Glenwood in the same year. Additional interchanges were added in the Sioux City and Council Bluffs areas between 1970 and 1971. The last 30 miles (48 km) of Interstate were constructed and opened in sections over the next two years; the last section opened on December 15, 1972.[2]

In 1973,

Iowa 92 at Council Bluffs. The former US 275 alignment was turned over to Mills and Pottawattamie counties.[10]

Much of I-29 was built next to existing highways, most notably

US 73 corridor in Nebraska.[13]

In March 2021, the Iowa DOT began a project to improve the I-29/I-480/West Broadway System Interchange at I-480's eastern terminus. The project was done to improve traffic flow, safety, and the functional design at that interchange as well as at the adjacent I-29 interchanges at 41st Street, 35th Street, Avenue G and 9th Avenue. The project is projected to be completed by the end of 2024.[14]

Exit list

CountyLocationmi[1]kmExit[15]DestinationsNotes
FremontWashington Township0.0000.000
 I-29 south – St. Joseph, Kansas City		Continuation into Missouri
1.8112.9151
 Iowa 333 east – Hamburg
Benton Township10.14416.32510 Iowa 2 – Sidney, Nebraska City
15.45824.87715 CR J26 – Percival
Iowa 145
24.44739.34424 CR L31 (To CR J10) – Bartlett, Tabor
MillsPlattville Township32.38652.12032 CR L35 – Pacific Junction, PlattsmouthFormerly US 34
35.47757.09535
 US 34 / US 275 south – Glenwood, Red Oak		Southern end of US 275 overlap
Iowa 370
PottawattamieCouncil Bluffs47.86577.03147
 US 275 north / Iowa 92 – Lake Manawa		Northern end of US 275 overlap
48.52678.09548A
 I-80 / US 6 east – Des Moines		Signed as exit 48 southbound; I-80 west exits 4A-B
48B

 I-80 Express / US 6 west – Omaha		Northbound exit and southbound entrance; I-80 east exit 4
49.23079.22849South Expressway – DowntownFormer Iowa 192 north; formerly signed as exit 3 on old alignment
50.68381.56650S. 24th Street – Mid-America CenterFormerly signed as exit 1B on old alignment
51.64483.11351
 I-80 west – Omaha		I-80 east exits 1A-B


 I-80 Express / US 6 east – Des Moines		Southern end of US 6 overlap; southbound exit and northbound entrance; I-80 west exit 1
52.37884.29452Nebraska Avenue – Mid-America Center
53.19985.61553A9th Avenue / Harrah's Boulevard
W. Broadway		Northbound exit and southbound entrance
53.77786.54653B
Omaha, Eppley Airfield
Clockwise terminus of I-480; northern end of US 6 overlap; signed as exit 53 southbound
54.20487.23354W. Broadway
9th Avenue / Harrah's Boulevard		Southbound exit and northbound entrance
55.71589.66555N. 25th Street
56.91791.59956N. 16th Street – Council Bluffs, Business DistrictSouthbound left exit and northbound entrance only; formerly Iowa 192
Crescent Township61.96699.72561

 I-680 west / CR G37 east – Crescent, North Omaha		Clockwise terminus of I-680; signed as exits 61A (east) and 61B (west)
Crescent–Rockford
township line		66.465106.96566Honey Creek (CR L19)
Rockford Township71.623115.26671
 I-880 east – Des Moines		Western terminus of I-880; former I-680 east, originally I-80N
71.988115.85372 CR G12 – Loveland, Wilson Island State Park
HarrisonMissouri Valley75.786121.96675 US 30 – Missouri Valley, Blair Nebraska
Taylor Township82.088132.10882 CR F50 – Modale
Morgan Township89.309143.72989
 Iowa 127 east – Mondamin
Little Sioux Township95.714154.03795 CR F20 – Little Sioux
MononaSherman Township105.347169.540105 CR K45 – Blencoe
Onawa112.326180.771112 Iowa 175 – Onawa, Decatur
Lincoln–Lake
township line		120.210193.459120 CR E24 – Whiting
WoodburySloan Township127.571205.306127
 Iowa 141 east – Sloan
Salix133.970215.604134Salix (CR K25)
135.708218.401135Port Neal Landing (CR D51)
Sergeant Bluff141.194227.230141Loess Hills National Scenic Byway south (CR D38) – Sergeant Bluff, Sioux Gateway AirportSouthern end of Loess Hills NSB overlap; access to airport via Aviation Boulevard (formerly Iowa 378)
US 75 Bus.
north (Singing Hills Boulevard) – Bridgeport, Industrial Park		Southern end of US 75 Business overlap; US 75 Business southbound traffic follows I-29 northbound
144.473232.507144
US 75 Bus. ends / US 20 / US 75 – Le Mars, Fort Dodge, South Sioux City
Northern end of US 75 Business overlap; signed as exits 144A (east/north) and 144B (west/south); I-129 exits 1A-B
147.476237.340147Floyd Boulevard / Virginia Street (
US 20 Bus. east / Iowa 12
south)		Northern end of US 20 Business/Iowa 12 overlap; signed as exit 147A northbound
148.050238.263147B Gordon Drive (
US 20 Bus. / Iowa 12) / Nebraska Street
Northbound exit and southbound entrance only; serves MercyOne Siouxland Medical Center
148.493238.976148
US 20 Bus. west (Wesley Parkway) – South Sioux City
Southern end of US 20 Business overlap; southbound access via exit 149
149.081239.923149

 To
US 20 Bus. west (Wesley Parkway) / Hamilton Boulevard – Riverfront, South Sioux City
Northbound signed as "Hamilton Boulevard – Riverfront" only
151.365243.598151
 Iowa 12 north (Riverside Boulevard) / Loess Hills National Scenic Byway – Akron		Northern end of Iowa 12/Loess Hills NSB overlap; IowaDOT signs this as southern end of Iowa 12
Big Sioux River151.826244.340Iowa–South Dakota line

 I-29 north – Sioux Falls		Continuation into South Dakota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b c d e f g 2009 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2009. Retrieved September 8, 2010.
  2. ^ a b c d Completion Map of Interstate System (PDF) (Map). Iowa Department of Transportation. January 1, 1982. Archived from the original (PDF) on September 29, 2011. Retrieved September 8, 2010.
  3. ^ Special Committee on U.S. Route Numbering (October 6, 2019). "2019 Annual Meeting Report to the Council on Highways and Streets" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 23, 2019. Retrieved October 9, 2019. "Ballot" (PDF). Archived from the original (PDF) on October 23, 2019.
  4. ^ Sioux City, Iowa (PDF) (Map). Iowa Department of Transportation. 2010. Retrieved September 8, 2010.
  5. ^ "Rain, storms follow weekend of storms; stir fears of floods". Lodi News-Sentinel. United Press International. April 2, 1962. p. 5. Retrieved January 29, 2015.
  6. ^ "I-29 bridge collapse". Sioux City Journal. April 22, 2012. Retrieved January 29, 2015.
  7. ISBN 9780784474655
    .
  8. ^ 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved February 29, 2024.
  9. Toledo Blade. Associated Press
    . October 13, 1967. p. 5. Retrieved September 8, 2010.
  10. ^ Iowa State Highway Map (PDF) (Map). Iowa Department of Transportation. 2004. § B2. Retrieved September 8, 2010.
  11. Iowa State Highway Commission
    . 1959. § L2:M3. Retrieved September 8, 2010.
  12. ^ Iowa State Highway Map (PDF) (Map). Iowa State Highway Commission. 1969. § G1:L3. Retrieved September 8, 2010.
  13. ^ Iowa State Highway Map (Map). Iowa Department of Transportation. 1985. § A5:B3.
  14. ^ "Interstate construction beginning soon at I-29/I-480/West Broadway interchange". iowadot.gov/. Iowa DOT. Retrieved June 22, 2024."Council Bluffs Interstate :: I-29/I-480/West Broadway Interchange". councilbluffsinterstate.iowadot.gov. Iowa DOT. Retrieved June 22, 2024.
  15. ^ Transportation Map (PDF) (Map). Iowa Department of Transportation. 2010. Retrieved September 8, 2010.
Wikimedia Commons has media related to Interstate 29 in Iowa.
KML file (edit • help)
Template:Attached KML/Interstate 29 in Iowa
KML is from Wikidata


Interstate 29
Previous state:
Missouri 		Iowa Next state:
South Dakota
Retrieved from "https://en.wikipedia.org/w/index.php?title=Interstate_29_in_Iowa&oldid=1288668280"