1969 Iowa highway renumbering

On January 1, 1969, the Iowa State Highway Commission, now known as the Iowa Department of Transportation, renumbered several state highways. The changes to the highway system fixed a number of issues: creating continuous route numbers across state lines, removing duplicate route numbers where they were unnecessary, and extending route numbers in some locations. Twenty-six sections of highway were assigned new route numbers, duplicate route numbers were removed on eleven sections, and one route number was extended to another section.[1]

This article is part of the
highway renumbering series.
Alabama 1928, 1957
Arkansas 1926
California 1964
Colorado 1953, 1968
Connecticut 1932, 1963
Florida 1945
Indiana 1926
Iowa 1926, 1969
Louisiana 1955
Maine 1933
Massachusetts 1933
Minnesota 1934
Missouri 1926
Montana 1932
Nebraska 1926
Nevada 1976
New Jersey 1927, 1953
New Mexico 1988
New York 1927, 1930
North Carolina 1934, 1937, 1940, 1961
Ohio 1923, 1927, 1962
Pennsylvania 1928, 1961
Puerto Rico 1953
South Carolina 1928, 1937
South Dakota 1927, 1975
Tennessee 1983
Texas 1939
Utah 1962, 1977
Virginia 1923, 1928, 1933, 1940, 1958
Washington 1964
Wisconsin 1926
Wyoming 1927

New routes
Number Length (mi)[2] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
Iowa 4 148.67239.26 Iowa 44 in PanoraMN 4 at the Minnesota state line 01969-01-011969current Previously Iowa 17
Iowa 5 104.55168.26 Route 5 at the Missouri state lineI-35 at West Des Moines 01969-01-011969current Previously Iowa 60
Iowa 7 76.27122.74 Iowa 3 near AureliaUS 20 in Fort Dodge 01969-01-011969current Previously Iowa 5
Iowa 15 63.52102.23 Iowa 3 near RolfeMN 15 at the Minnesota state line 01969-01-011969current Previously Iowa 44
Iowa 15 4.797.71 Route 15 at the Missouri state lineIowa 2 at Milton 01969-01-01196902003-07-012003 Previously Iowa 23
Iowa 17 102.62165.15 Iowa 141 at GrangerUS 18 at Wesley 01969-01-011969current Previously Iowa 60
Iowa 23 14.6623.59 Iowa 137 in EddyvilleUS 63 in Ottumwa 01969-01-01196901997-07-161997 Previously Iowa 15
Iowa 26 11.4418.41 Iowa 9 in LansingMN 26 at the Minnesota state line 01969-01-011969current Previously Iowa 182
Iowa 39 24.4239.30 US 59 / Iowa 141 at DensionIowa 175 in Odebolt 01969-01-011969current Previously Iowa 4
Iowa 44 104.83168.71 US 30 near LoganIowa 141 near Grimes 01969-01-011969current Previously Iowa 39 and Iowa 64
Iowa 60 55.9390.01 US 75 near Le MarsMN 60 at the Minnesota state line 01969-01-011969current Previously Iowa 33
Iowa 70 25.9141.70 Columbus CityUS 6 in West Liberty 01969-01-011969current Previously Iowa 76
Iowa 76 44.8272.13 US 18 in MarquetteMN 76 at the Minnesota state line 01969-01-011969current Previously Iowa 13
Iowa 81 2.223.57 Route 81 at the Missouri state lineIowa 2 at Farmington 01969-01-011969current Previously Iowa 114
Iowa 114 9.2014.81 Iowa 92 near West ChesterIowa 22 at Wellman 01969-01-01196901980-01-011980 Previously Iowa 81
Iowa 130 38.8062.44 Iowa 38 in TiptonUS 61 / US 67 in Davenport 01969-01-011969current Previously Iowa 150
Iowa 182 9.3615.06 US 18 in InwoodIowa 9 near Larchwood 01969-01-011969current Previously Iowa 26
Iowa 202 10.5016.90 Route 202 at the Missouri state lineIowa 2 near Moulton 01969-01-011969current Previously Iowa 142
Iowa 254 7.9112.73 Iowa 9 near Buffalo CenterMN 254 at the Minnesota state line 01969-01-01196901980-01-011980 Previously Iowa 322
Iowa 322 0.450.72 MassenaIowa 92 at Massena 01969-01-01196901972-07-011972 Previously Iowa 254
Iowa 985 5.578.96 I-29 / US 20 / US 77 in Sioux CityWoodbury–Plymouth county line at Sioux City 01969-01-01196901973-01-011973 Previously Iowa 7

Former routes
Number Length (mi)[3] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
Iowa 4 29.4147.33 US 59 / Iowa 141 at DenisonIowa 175 at Odebolt 01920-01-01192001968-12-311968 Became Iowa 39
Iowa 5 76.57123.23 Iowa 3 near AureliaUS 20 in Fort Dodge 01920-01-01192001968-12-311968 Became Iowa 7
Iowa 7 22.0935.55 I-29 / US 77 in Sioux CityIowa 3 near Brunsville 01957-01-01195701968-12-311968 Portions given to Plymouth County and the rest became Iowa 985
Iowa 15 14.6623.59 Iowa 137 in EddyvilleUS 63 in Ottumwa 01937-01-01193701968-12-311968 Became Iowa 23
Iowa 17 146.43235.66 Iowa 64 in PanoraMN 4 at the Minnesota state line 01920-01-01192001968-12-311968 Became Iowa 4
Iowa 23 4.787.69 Route 15 at the Missouri state lineIowa 2 in Milton 01926-01-01192601968-12-311968 Became Iowa 15
Iowa 26 9.3114.98 US 18 in InwoodIowa 9 near Larchwood 01930-01-01193001968-12-311968 Became Iowa 182
Iowa 33 55.9089.96 US 75 near Le MarsMN 60 at the Minnesota state line 01931-01-01193101968-12-311968 Became Iowa 60
Iowa 39 11.6318.72 US 30 near LoganIowa 64 / Iowa 191 in Portsmouth 01920-01-01192001968-12-311968 Became part of Iowa 44
Iowa 44 63.63102.40 Iowa 3 near RolfeMN 15 at the Minnesota state line 01920-01-01192001968-12-311968 Became Iowa 15
Iowa 60 225.27362.54 Route 5 at the Missouri state lineUS 18 at Wesley 01920-01-01192001968-12-311968 Became Iowa 5 and Iowa 17
Iowa 76 25.9141.70 Columbus CityUS 6 in West Liberty 01920-01-01192001968-12-311968 Became Iowa 70
Iowa 81 9.2014.81 Iowa 92 near West ChesterIowa 22 at Wellman 01920-01-01192001968-12-311968 Became Iowa 114
Iowa 114 2.223.57 Route 81 at the Missouri state lineIowa 2 at Farmington 01924-01-01192401968-12-311968 Became Iowa 81
Iowa 142 10.5016.90 Route 202 at the Missouri state lineIowa 2 near Moulton 01926-01-01192601968-12-311968 Became Iowa 202
Iowa 182 11.4418.41 Iowa 9 in LansingMN 26 at the Minnesota state line 01930-01-01193001968-12-311968 Became Iowa 26
Iowa 254 0.450.72 MassenaIowa 92 at Massena 01932-01-01193201968-12-311968 Became Iowa 322
Iowa 322 7.9112.73 Iowa 9 near Buffalo CenterMN 254 at the Minnesota state line 01935-01-01193501968-12-311968 Became Iowa 254

Existing route changes
Number Change in length Southern or western terminus Northern or eastern terminus Formed Removed Notes
mi[lower-alpha 1] km
Iowa 13 -46.66−75.09 US 151 near Marion
US 52 near Froelich		US 30 near Bertram
MN 76 near Dorchester		 01920-01-011920current Extended over Iowa 150 and truncated north of US 52
Iowa 21 21.4634.54 Iowa 8 at DysartIowa 412 in Waterloo 01934-01-011934current Extended over new road
Iowa 64 -273.76−440.57 US 6 in Council BluffsUS 151 in Anamosa 01936-01-011936current Mileage assigned to Iowa 191, Iowa 44, and Iowa 330
Iowa 150 -80.15−128.99 US 151 / Iowa 13 in MarionUS 61 / US 67 in Davenport 01941-01-011941current Assigned to Iowa 13 and Iowa 130
Iowa 191 30.5249.12 US 6 in Council BluffsIowa 44 in Portsmouth 01930-01-011930current Extended over Iowa 64
Iowa 330 20.7233.35 US 65 / Iowa 117 near MingoUS 30 in Marshalltown 01948-01-011948current Extended over Iowa 64

Notes
  1. Calculated by subtracting the 1965 mileage from the 1970 mileage[2][3]

References
  1. "New Iowa Map Goes on Sale". Telegraph-Herald. Dubuque, Iowa. January 14, 1969. Retrieved January 9, 2011.
  2. 1970 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. July 1971. Retrieved August 18, 2020.
  3. 1965 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. June 1966. Retrieved August 18, 2020.

See also
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