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 |
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
editNumber | Length (mi)[2] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
148.67 | 239.26 | Iowa 44 in Panora | MN 4 at the Minnesota state line | 1969 | current | Previously Iowa 17 | ||
104.55 | 168.26 | Route 5 at the Missouri state line | I-35 at West Des Moines | 1969 | current | Previously Iowa 60 | ||
76.27 | 122.74 | Iowa 3 near Aurelia | US 20 in Fort Dodge | 1969 | current | Previously Iowa 5 | ||
63.52 | 102.23 | Iowa 3 near Rolfe | MN 15 at the Minnesota state line | 1969 | current | Previously Iowa 44 | ||
4.79 | 7.71 | Route 15 at the Missouri state line | Iowa 2 at Milton | 1969 | 2003 | Previously Iowa 23 | ||
102.62 | 165.15 | Iowa 141 at Granger | US 18 at Wesley | 1969 | current | Previously Iowa 60 | ||
14.66 | 23.59 | Iowa 137 in Eddyville | US 63 in Ottumwa | 1969 | 1997 | Previously Iowa 15 | ||
11.44 | 18.41 | Iowa 9 in Lansing | MN 26 at the Minnesota state line | 1969 | current | Previously Iowa 182 | ||
24.42 | 39.30 | US 59 / Iowa 141 at Dension | Iowa 175 in Odebolt | 1969 | current | Previously Iowa 4 | ||
104.83 | 168.71 | US 30 near Logan | Iowa 141 near Grimes | 1969 | current | Previously Iowa 39 and Iowa 64 | ||
55.93 | 90.01 | US 75 near Le Mars | MN 60 at the Minnesota state line | 1969 | current | Previously Iowa 33 | ||
25.91 | 41.70 | Columbus City | US 6 in West Liberty | 1969 | current | Previously Iowa 76 | ||
44.82 | 72.13 | US 18 in Marquette | MN 76 at the Minnesota state line | 1969 | current | Previously Iowa 13 | ||
2.22 | 3.57 | Route 81 at the Missouri state line | Iowa 2 at Farmington | 1969 | current | Previously Iowa 114 | ||
9.20 | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1969 | 1980 | Previously Iowa 81 | ||
38.80 | 62.44 | Iowa 38 in Tipton | US 61 / US 67 in Davenport | 1969 | current | Previously Iowa 150 | ||
9.36 | 15.06 | US 18 in Inwood | Iowa 9 near Larchwood | 1969 | current | Previously Iowa 26 | ||
10.50 | 16.90 | Route 202 at the Missouri state line | Iowa 2 near Moulton | 1969 | current | Previously Iowa 142 | ||
7.91 | 12.73 | Iowa 9 near Buffalo Center | MN 254 at the Minnesota state line | 1969 | 1980 | Previously Iowa 322 | ||
0.45 | 0.72 | Massena | Iowa 92 at Massena | 1969 | 1972 | Previously Iowa 254 | ||
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
editNumber | Length (mi)[3] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
29.41 | 47.33 | US 59 / Iowa 141 at Denison | Iowa 175 at Odebolt | 1920 | 1968 | Became Iowa 39 | ||
76.57 | 123.23 | Iowa 3 near Aurelia | US 20 in Fort Dodge | 1920 | 1968 | Became 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 | ||
14.66 | 23.59 | Iowa 137 in Eddyville | US 63 in Ottumwa | 1937 | 1968 | Became Iowa 23 | ||
146.43 | 235.66 | Iowa 64 in Panora | MN 4 at the Minnesota state line | 1920 | 1968 | Became Iowa 4 | ||
4.78 | 7.69 | Route 15 at the Missouri state line | Iowa 2 in Milton | 1926 | 1968 | Became Iowa 15 | ||
9.31 | 14.98 | US 18 in Inwood | Iowa 9 near Larchwood | 1930 | 1968 | Became Iowa 182 | ||
55.90 | 89.96 | US 75 near Le Mars | MN 60 at the Minnesota state line | 1931 | 1968 | Became Iowa 60 | ||
11.63 | 18.72 | US 30 near Logan | Iowa 64 / Iowa 191 in Portsmouth | 1920 | 1968 | Became part of Iowa 44 | ||
63.63 | 102.40 | Iowa 3 near Rolfe | MN 15 at the Minnesota state line | 1920 | 1968 | Became Iowa 15 | ||
225.27 | 362.54 | Route 5 at the Missouri state line | US 18 at Wesley | 1920 | 1968 | Became Iowa 5 and Iowa 17 | ||
25.91 | 41.70 | Columbus City | US 6 in West Liberty | 1920 | 1968 | Became Iowa 70 | ||
9.20 | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1920 | 1968 | Became Iowa 114 | ||
2.22 | 3.57 | Route 81 at the Missouri state line | Iowa 2 at Farmington | 1924 | 1968 | Became Iowa 81 | ||
10.50 | 16.90 | Route 202 at the Missouri state line | Iowa 2 near Moulton | 1926 | 1968 | Became Iowa 202 | ||
11.44 | 18.41 | Iowa 9 in Lansing | MN 26 at the Minnesota state line | 1930 | 1968 | Became Iowa 26 | ||
0.45 | 0.72 | Massena | Iowa 92 at Massena | 1932 | 1968 | Became 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
editNumber | Change in length | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | ||
---|---|---|---|---|---|---|---|---|
mi[a] | km | |||||||
-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 | ||
21.46 | 34.54 | Iowa 8 at Dysart | Iowa 412 in Waterloo | 1934 | current | Extended over new road | ||
-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 | ||
-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 | ||
30.52 | 49.12 | US 6 in Council Bluffs | Iowa 44 in Portsmouth | 1930 | current | Extended over Iowa 64 | ||
20.72 | 33.35 | US 65 / Iowa 117 near Mingo | US 30 in Marshalltown | 1948 | current | Extended over Iowa 64 | ||
Notes
editReferences
edit- ^ "New Iowa Map Goes on Sale". Telegraph-Herald. Dubuque, Iowa. January 14, 1969. Retrieved January 9, 2011.
- ^ 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.