1969 Iowa highway renumbering
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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]
New routes
Number | Length (mi)[2] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
Iowa 4 | 148.67 | 239.26 | Iowa 44 in Panora | MN 4 at the Minnesota state line | 1969 | current | Previously Iowa 17 | |
Iowa 5 | 104.55 | 168.26 | Route 5 at the Missouri state line | I-35 at West Des Moines | 1969 | current | Previously Iowa 60 | |
Iowa 7 | 76.27 | 122.74 | Iowa 3 near Aurelia | US 20 in Fort Dodge | 1969 | current | Previously Iowa 5 | |
Iowa 15 | 63.52 | 102.23 | Iowa 3 near Rolfe | MN 15 at the Minnesota state line | 1969 | current | Previously Iowa 44 | |
Iowa 15 | 4.79 | 7.71 | Route 15 at the Missouri state line | Iowa 2 at Milton | 1969 | 2003 | Previously Iowa 23 | |
Iowa 17 | 102.62 | 165.15 | Iowa 141 at Granger | US 18 at Wesley | 1969 | current | Previously Iowa 60 | |
Iowa 23 | 14.66 | 23.59 | Iowa 137 in Eddyville | US 63 in Ottumwa | 1969 | 1997 | Previously Iowa 15 | |
Iowa 26 | 11.44 | 18.41 | Iowa 9 in Lansing | MN 26 at the Minnesota state line | 1969 | current | Previously Iowa 182 | |
Iowa 39 | 24.42 | 39.30 | US 59 / Iowa 141 at Dension | Iowa 175 in Odebolt | 1969 | current | Previously Iowa 4 | |
Iowa 44 | 104.83 | 168.71 | US 30 near Logan | Iowa 141 near Grimes | 1969 | current | Previously Iowa 39 and Iowa 64 | |
Iowa 60 | 55.93 | 90.01 | US 75 near Le Mars | MN 60 at the Minnesota state line | 1969 | current | Previously Iowa 33 | |
Iowa 70 | 25.91 | 41.70 | Columbus City | US 6 in West Liberty | 1969 | current | Previously Iowa 76 | |
Iowa 76 | 44.82 | 72.13 | US 18 in Marquette | MN 76 at the Minnesota state line | 1969 | current | Previously Iowa 13 | |
Iowa 81 | 2.22 | 3.57 | Route 81 at the Missouri state line | Iowa 2 at Farmington | 1969 | current | Previously Iowa 114 | |
Iowa 114 | 9.20 | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1969 | 1980 | Previously Iowa 81 | |
Iowa 130 | 38.80 | 62.44 | Iowa 38 in Tipton | US 61 / US 67 in Davenport | 1969 | current | Previously Iowa 150 | |
Iowa 182 | 9.36 | 15.06 | US 18 in Inwood | Iowa 9 near Larchwood | 1969 | current | Previously Iowa 26 | |
Iowa 202 | 10.50 | 16.90 | Route 202 at the Missouri state line | Iowa 2 near Moulton | 1969 | current | Previously Iowa 142 | |
Iowa 254 | 7.91 | 12.73 | Iowa 9 near Buffalo Center | MN 254 at the Minnesota state line | 1969 | 1980 | Previously Iowa 322 | |
Iowa 322 | 0.45 | 0.72 | Massena | Iowa 92 at Massena | 1969 | 1972 | Previously Iowa 254 | |
Iowa 985 | 5.57 | 8.96 | I-29 / US 20 / US 77 in Sioux City | Woodbury–Plymouth county line at Sioux City | 1969 | 1973 | Previously Iowa 7 | |
Former routes
Number | Length (mi)[3] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
Iowa 4 | 29.41 | 47.33 | US 59 / Iowa 141 at Denison | Iowa 175 at Odebolt | 1920 | 1968 | Became Iowa 39 | |
Iowa 5 | 76.57 | 123.23 | Iowa 3 near Aurelia | US 20 in Fort Dodge | 1920 | 1968 | Became Iowa 7 | |
Iowa 7 | 22.09 | 35.55 | I-29 / US 77 in Sioux City | Iowa 3 near Brunsville | 1957 | 1968 | Portions given to Plymouth County and the rest became Iowa 985 | |
Iowa 15 | 14.66 | 23.59 | Iowa 137 in Eddyville | US 63 in Ottumwa | 1937 | 1968 | Became Iowa 23 | |
Iowa 17 | 146.43 | 235.66 | Iowa 64 in Panora | MN 4 at the Minnesota state line | 1920 | 1968 | Became Iowa 4 | |
Iowa 23 | 4.78 | 7.69 | Route 15 at the Missouri state line | Iowa 2 in Milton | 1926 | 1968 | Became Iowa 15 | |
Iowa 26 | 9.31 | 14.98 | US 18 in Inwood | Iowa 9 near Larchwood | 1930 | 1968 | Became Iowa 182 | |
Iowa 33 | 55.90 | 89.96 | US 75 near Le Mars | MN 60 at the Minnesota state line | 1931 | 1968 | Became Iowa 60 | |
Iowa 39 | 11.63 | 18.72 | US 30 near Logan | Iowa 64 / Iowa 191 in Portsmouth | 1920 | 1968 | Became part of Iowa 44 | |
Iowa 44 | 63.63 | 102.40 | Iowa 3 near Rolfe | MN 15 at the Minnesota state line | 1920 | 1968 | Became Iowa 15 | |
Iowa 60 | 225.27 | 362.54 | Route 5 at the Missouri state line | US 18 at Wesley | 1920 | 1968 | Became Iowa 5 and Iowa 17 | |
Iowa 76 | 25.91 | 41.70 | Columbus City | US 6 in West Liberty | 1920 | 1968 | Became Iowa 70 | |
Iowa 81 | 9.20 | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1920 | 1968 | Became Iowa 114 | |
Iowa 114 | 2.22 | 3.57 | Route 81 at the Missouri state line | Iowa 2 at Farmington | 1924 | 1968 | Became Iowa 81 | |
Iowa 142 | 10.50 | 16.90 | Route 202 at the Missouri state line | Iowa 2 near Moulton | 1926 | 1968 | Became Iowa 202 | |
Iowa 182 | 11.44 | 18.41 | Iowa 9 in Lansing | MN 26 at the Minnesota state line | 1930 | 1968 | Became Iowa 26 | |
Iowa 254 | 0.45 | 0.72 | Massena | Iowa 92 at Massena | 1932 | 1968 | Became Iowa 322 | |
Iowa 322 | 7.91 | 12.73 | Iowa 9 near Buffalo Center | MN 254 at the Minnesota state line | 1935 | 1968 | Became Iowa 254 | |
Existing route changes
Number | Change in length | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | ||
---|---|---|---|---|---|---|---|---|
mi[a] | km | |||||||
Iowa 13 | -46.66 | −75.09 | US 151 near Marion US 52 near Froelich |
US 30 near Bertram MN 76 near Dorchester |
1920 | current | Extended over Iowa 150 and truncated north of US 52 | |
Iowa 21 | 21.46 | 34.54 | Iowa 8 at Dysart | Iowa 412 in Waterloo | 1934 | current | Extended over new road | |
Iowa 64 | -273.76 | −440.57 | US 6 in Council Bluffs | US 151 in Anamosa | 1936 | current | Mileage assigned to Iowa 191, Iowa 44, and Iowa 330 | |
Iowa 150 | -80.15 | −128.99 | US 151 / Iowa 13 in Marion | US 61 / US 67 in Davenport | 1941 | current | Assigned to Iowa 13 and Iowa 130 | |
Iowa 191 | 30.52 | 49.12 | US 6 in Council Bluffs | Iowa 44 in Portsmouth | 1930 | current | Extended over Iowa 64 | |
Iowa 330 | 20.72 | 33.35 | US 65 / Iowa 117 near Mingo | US 30 in Marshalltown | 1948 | current | Extended over Iowa 64 | |
Notes
References
- ^ "New Iowa Map Goes on Sale". Telegraph-Herald. Dubuque, Iowa. January 14, 1969. Retrieved January 9, 2011 – via Google News.
- ^ a b 1970 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. July 1971. Retrieved August 18, 2020.
- ^ a b 1965 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa State Highway Commission. June 1966. Retrieved August 18, 2020.