Iowa Primary Highway System | |
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Highways that changed jurisdiction around 1980 Removed highways Renumbered highways Added highways | |
System information | |
Notes | Primary highways in Iowa are generally state-maintained. |
Highway names | |
Interstates | Interstate X (I-X) |
US Highways | U.S. Highway X (US X) |
State | Highway X (IA X or Iowa X) |
System links | |
Beginning in 1979 and lasting through the early 1980s, a series of agreements between the Iowa Department of Transportation and individual county boards of supervisors led to a mass transfer of jurisdiction of several state highways in Iowa. County boards of supervisors were asked to convene functional classification boards in order to review the classification all of the highway miles within each respective county. Control of roads that were classified as trunk roads or trunk collector roads were transferred to the counties, while roads classified as arteries or arterial collectors were transferred to the state department of transportation. The vast majority of transfers took place in 1980.
Background
[edit]The 67th Iowa General Assembly passed a bill in 1978 that changed how the state department of transportation (DOT) classified highways and how they were funded throughout the state. The bill enacted an existing framework for county boards of supervisors to create reclassification boards that could appeal to a state board if certain changes to the road network were not satisfactory. The state's road use tax fund, which is the mechanism for allocating funds to the different levels of government for different levels of road, had both its inputs and outputs modified. The general fuel tax was raised from 7 to 8+1⁄2 cents per US gallon (1.8 to 2.2 ¢/L) for 1978 (equivalent to 33 to 40 cents per US gallon (8.7 to 10.6 ¢/L) in 2023), and to 10 ¢/US gal (2.6 ¢/L) for 1979 (equivalent to 42 ¢/US gal (11 ¢/L) in 2023).[1][2]
The state was attempting to offset the effects the 1970s energy crisis and the 1973–75 recession which strained state budgets by reducing income due to reduced demand for gasoline and increasing inflation.[3] The idea was for the DOT to save operational money by offloading minor highways to the respective counties. In 1979, Iowa had the 9th largest public road system in the United States with over 113,000 miles (182,000 km) of roadways, 10,000 miles (16,000 km) of which were primary highways, comprising Interstate Highways, U.S. Highways, and state highways. State planners sought to offload nearly one-third of the primary system. Naturally, county officials, whose road budgets were similarly strained, balked at the idea.[4]
The Iowa Code provided a manner for determining the class of a particular highway. Each county was to appoint a three-member board, one of whom was to be a state DOT employee, one a county engineer or supervisor, and the other a municipal leader chosen by a majority of mayors in the county. The board was to classify each mile of roads and streets in the county into one of twelve categories. Only three categories applied to primary highways–freeways and expressways, arterials, and arterial connectors. The freeway-expressway and arterial systems had limits on total mileage, 2,660 and 3,500 miles (4,280 and 5,630 km), respectively. The only other requirement of the reclassification boards was to ensure network continuity between counties.[5] Ultimately, these boards found about 1,000 miles (1,600 km) of minor highways that were on the primary system and 400 miles (640 km) of major highways on the secondary system.[4]
County officials were not keen on the idea of taking over more highway miles from the state when their own road budgets were tight. Clarke County officials sued the state classification board when it suggested the county take over an 11-mile (18 km) portion of U.S. Highway 69 (US 69). They felt the DOT was attempting to dump unwanted highway miles, which were also in poor condition, on a county unwilling to accept them.[3] Some counties felt pressure to accept roads from the state that the DOT had not maintained adequately.[6] Grundy County had some success by reclassifying some roads slated for transfer, such as Iowa Highway 214 (Iowa 214) into Wellsburg. That highway was reclassified as an arterial collector extension, keeping in spirit with an agreement it had with the DOT to maintain the highway until "Interstate 520" was built.[7] Other counties had appeals heard at the DOT headquarters in Ames.[8]
Construction of new highways, such as Interstate 380 (I-380) would cause a chain reaction in other state highways. It was predicted in 1979 that opening I-380 in the Cedar Rapids area would cause Iowa 150 to lose its status as a primary highway because the route ran roughly parallel to the planned Interstate Highway's corridor.[9] Indeed, when I-380 opened to traffic in 1984, Iowa 150 was rerouted away from Cedar Rapids over Iowa 101 to Vinton. One section of Iowa 150 along Collins Road in Cedar Rapids was still classified as an arterial connector; it became Iowa 100.
One provision in the Iowa Code required whichever agency maintained a section of highway previously to either repair the highway in question or to pay an appropriate amount of money equal to the costs of repairing the road to the agency receiving the road.[10] In Johnson County, state and county officials had difficulty reaching an agreement on a former segment of Iowa 1, by then renumbered Iowa 979. County officials wanted the state to take over County Road W66 (CR W66) from I-80 to the west overlook of Coralville Lake. The state countered with an offer to pay to upgrade Iowa 979 as well as have the county take over three other highways in the county.[11] The two sides were not any closer 18 months later when the DOT was ready to open a new four-lane US 218 south of Iowa City.[12] The routes for which no agreement could be made were ultimately kept by the DOT and assigned new route numbers, as was the case with Iowa 979.
Routes removed
[edit]Lengths represent the distances removed from the state highway system
Number | Length (mi)[13] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
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6.86 | 11.04 | Alvord | US 75 near Rock Rapids | 1930 | 1980 | ||
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4.18 | 6.73 | US 275 / Iowa 2 near Sidney | Riverton | 1920 | 1980 | ||
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1.58 | 2.54 | Ringsted | Iowa 15 near Ringsted | 1920 | 1980 | ||
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0.82 | 1.32 | Iowa 14 near Allison | Allison | 1951 | 1980 | ||
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2.99 | 4.81 | Marble Rock | Iowa 14 east of Marble Rock | 1920 | 1980 | ||
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7.80 | 12.55 | Iowa 78 at Richland | Iowa 92 at Keota | 1920 | 2003 | Segment into Keota remained | |
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1.74 | 2.80 | Iowa 2 near Bonaparte | Bonaparte | 1920 | 1980 | ||
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2.13 | 3.43 | The Eastern Iowa Airport | I-380 near Cedar Rapids | 1943 | 1980 | ||
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0.47 | 0.76 | Fertile | Iowa 9 at Fertile | 1945 | 1980 | ||
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4.06 | 6.53 | US 69 west of Elkhart | Elkhart | 1920 | 1983 | ||
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8.01 | 12.89 | US 61 / Iowa 2 in Fort Madison | Iowa 16 in Denmark | 1940 | 1980 | ||
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7.69 | 12.38 | Iowa 141 near Woodward | Iowa 17 in Madrid | 1946 | 1980 | Replaced by an extended Iowa 210 | |
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16.32 | 26.26 | I-80 in Dallas County | I-35 in Des Moines | 1932 | 1981 | ||
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4.18 | 6.73 | Ledyard | US 169 near Ledyard | 1940 | 1980 | ||
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3.70 | 5.95 | Carbon | Iowa 148 north of Corning | 1932 | 1983 | ||
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15.56 | 25.04 | US 218 in Vinton | Iowa 150 north of Urbana | 1920 | 1984 | Replaced by a relocated Iowa 150 | |
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1.82 | 2.93 | Hawkeye | US 18 near Hawkeye | 1920 | 1980 | ||
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1.53 | 2.46 | Woodburn | US 34 near Woodburn | 1927 | 1980 | ||
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8.98 | 14.45 | Iowa 107 in Clear Lake | US 65 in Mason City | 1920 | 1980 | ||
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1.18 | 1.90 | Delta | Iowa 92 near Delta | 1923 | 1980 | ||
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5.19 | 8.35 | Volga | Iowa 13 near Osborne | 1931 | 1980 | ||
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9.20 | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1969 | 1981 | Previously Iowa 81 | |
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1.04 | 1.67 | Dorchester | Iowa 76 near Dorchester | 1923 | 1980 | ||
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0.80 | 1.29 | Stanton | US 34 near Stanton | 1924 | 1980 | ||
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0.45 | 0.72 | US 34 near Rome | Rome | 1970 | 1980 | ||
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3.26 | 5.25 | Salem | US 218 near Salem | 1924 | 1981 | ||
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0.97 | 1.56 | US 6 near Mitchellville | Mitchellville | 1924 | 1980 | ||
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4.06 | 6.53 | US 65 near Hampton | Geneva | 1935 | 1980 | ||
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1.96 | 3.15 | Montour | US 30 near Montour | 1954 | 1980 | ||
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1.31 | 2.11 | US 34 near Murray | Murray | 1926 | 1980 | ||
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3.05 | 4.91 | Nodaway | US 34 near Nodaway | 1933 | 1980 | ||
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0.33 | 0.53 | Bussey city limits | Bussey | — | 2003 | Turned over within city limits | |
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1.83 | 2.95 | Iowa 92 near Harper | Harper | 1929 | 1980 | ||
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0.57 | 0.92 | Hastings | US 34 near Hastings | 1930 | 1980 | ||
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3.21 | 5.17 | Doon | US 75 near Doon | 1930 | 1980 | ||
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2.70 | 4.35 | Iowa 83 near Minden | Shelby | 1930 | 1980 | ||
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1.05 | 1.69 | Elberon | Iowa 21 near Elberon | 1935 | 1980 | ||
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4.23 | 6.81 | Elgin | US 18 in Clermont | 1930 | 1980 | ||
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3.20 | 5.15 | Iowa 9 near Osage | Elgin | 1937 | 1980 | ||
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0.98 | 1.58 | Iowa 9 near Little Rock | Little Rock | 1930 | 1980 | ||
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0.76 | 1.22 | US 69 near Klemme | Klemme | 1930 | 1980 | ||
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2.46 | 3.96 | Hayesville | Iowa 149 near Hayesville | 1930 | 1980 | ||
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3.27 | 5.26 | US 34 near Prescott | Prescott | 1930 | 1980 | ||
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1.00 | 1.61 | Bridgewater | Iowa 92 north or Bridgwater | 1930 | 1980 | ||
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7.46 | 12.01 | Fairbank | Iowa 150 near Oelwein | 1931 | 1980 | Replaced by Iowa 281 | |
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0.43 | 0.69 | Garrison | Garrison city limits | — | 2003 | Turned over within city limits | |
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0.54 | 0.87 | Van Horne city limits | Van Horne | — | 2003 | Turned over within city limits | |
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0.59 | 0.95 | Keystone city limits | Keystone | — | 2003 | Turned over within city limits | |
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8.78 | 14.13 | Terril | Iowa 9 near Superior | 1920 | 1980 | ||
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3.72 | 5.99 | Blakesburg | US 34 north or Blakesburg | 1931 | 1980 | ||
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1.70 | 2.74 | Iowa 5 | Exline | 1931 | 1981 | ||
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1.53 | 2.46 | Iowa 9 near Lake Park | Lake Park | 1931 | 1980 | ||
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2.44 | 3.93 | US 69 near Story City | I-35 near Story City | — | 2003 | Segment from I-35 to Roland remained | |
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14.72 | 23.69 | Iowa 15 near Ottosen | Livermore | 1931 | 1980 | ||
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10.78 | 17.35 | US 18 near Wesley | Titonka | 1931 | 1980 | ||
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1.83 | 2.95 | Iowa 10 near Ireton | Ireton | 1931 | 1981 | ||
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1.99 | 3.20 | Earlham | I-80 near Earlham | 1931 | 1980 | ||
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1.23 | 1.98 | Ocheyedan | Iowa 9 near Ocheyedan | 1931 | 1981 | ||
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0.99 | 1.59 | Readlyn | Iowa 3 near Readlyn | 1931 | 1980 | ||
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7.97 | 12.83 | Iowa 140 near Kingsley | Pierson | 1931 | 1980 | ||
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1.96 | 3.15 | Henderson | US 59 | 1931 | 1980 | ||
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3.26 | 5.25 | US 61 in Zwingle | La Motte | 1931 | 1980 | ||
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0.49 | 0.79 | Independence State Hospital | US 20 in Independence | 1931 | 1980 | ||
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0.59 | 0.95 | Lakota | US 169 / Iowa 9 near Lakota | 1932 | 1980 | ||
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1.71 | 2.75 | St. Charles | I-35 near St. Charles | 1932 | 1980 | ||
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7.91 | 12.73 | Iowa 9 near Buffalo Center | MN 254 near Rake | 1969 | 1980 | ||
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2.26 | 3.64 | Orchard | US 218 near Orchard | 1932 | 1980 | ||
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0.80 | 1.29 | Iowa 17 near Corwith | Corwith | 1932 | 1980 | ||
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0.45 | 0.72 | Tingley city limits | Tingley | — | 2003 | Turned over within city limits | |
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1.99 | 3.20 | US 69 near Galt | Galt | 1933 | 1980 | ||
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2.02 | 3.25 | Coulter | Latimer | 1933 | 1980 | Double spur route with Iowa 3 | |
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2.39 | 3.85 | Linn Grove | Iowa 10 near Linn Grove | 1933 | 1980 | ||
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0.12 | 0.19 | Weldon city limits | Weldon | — | 2003 | Turned over within city limits | |
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1.19 | 1.92 | Iowa 93 near Randalia | Randalia | 1934 | 1980 | ||
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3.01 | 4.84 | Iowa 16 near Stockport | Stockport | 1934 | 1980 | ||
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1.80 | 2.90 | Iowa 16 near Hillsboro | Hillsboro | 1934 | 1980 | ||
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0.84 | 1.35 | Iowa 4 near Yale | Yale | 1935 | 1980 | ||
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6.24 | 10.04 | Numa | Iowa 5 near Centerville | 1935 | 1980 | ||
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2.05 | 3.30 | Rathbun | Iowa 5 near Rathbun | 1935 | 1980 | ||
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0.72 | 1.16 | Atkins city limits | Atkins | — | 2003 | Turned over within city limits | |
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5.58 | 8.98 | Aurora | Iowa 187 at Lamont | 1935 | 1980 | ||
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0.42 | 0.68 | Newhall city limits | Newhall | — | 2003 | Turned over within city limits | |
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4.58 | 7.37 | US 65 near Manly | Plymouth | 1935 | 1980 | ||
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6.14 | 9.88 | Alta Vista | US 63 near Lourdes | 1935 | 1980 | ||
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1.99 | 3.20 | Farmersburg | Iowa 13 near Farmersburg | 1935 | 1980 | ||
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1.01 | 1.63 | Low Moor | US 30 near Low Moor | 1935 | 1979 | ||
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3.17 | 5.10 | Linden | Iowa 44 | 1935 | 1980 | ||
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1.42 | 2.29 | Iowa 90 near Van Meter | Van Meter | 1935 | 1980 | ||
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5.09 | 8.19 | Westgate | Iowa 150 near Maynard | 1935 | 1980 | ||
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4.44 | 7.15 | CR C24 near Wadena | Iowa 56 near Wadena | 1935 | 1980 | ||
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3.00 | 4.83 | Thor | Iowa 3 near Thor | 1935 | 1980 | ||
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3.51 | 5.65 | US 34 near Fairfield | Libertyville | 1935 | 1981 | ||
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1.59 | 2.56 | Iowa 78 near Ollie | Ollie | 1935 | 1980 | ||
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2.32 | 3.73 | Beacon | Iowa 137 in Oskaloosa | 1935 | 1980 | ||
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0.55 | 0.89 | Liscomb | Liscomb city limits | 1935 | 1989 | Turned over within city limits | |
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5.70 | 9.17 | Iowa 9 near Riceville | McIntire | 1935 | 1980 | ||
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2.03 | 3.27 | Melvin city limits | Melvin | 1935 | 2002 | ||
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0.81 | 1.30 | US 65 near Zearing | Zearing | 1935 | 1980 | ||
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5.51 | 8.87 | Clutier | Iowa 21 near Clutier | 1935 | 1980 | ||
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0.50 | 0.80 | Gravity | Iowa 148 at Gravity | 1935 | 1980 | ||
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3.74 | 6.02 | Iowa 17 near Woolstock | Woolstock | 1935 | 1980 | ||
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0.47 | 0.76 | Spillville | Spillville city limits | 1935 | 2003 | Turned over within city limits | |
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2.18 | 3.51 | Bristow | Iowa 3 near Bristow | 1935 | 1981 | ||
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2.29 | 3.69 | US 20 near Galva | Galva | 1935 | 1980 | ||
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4.85 | 7.81 | US 169 at Boxholm | Pilot Mound | 1935 | 1980 | ||
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1.00 | 1.61 | Pilot Knob State Park | Iowa 9 near Forest City | 1935 | 1980 | Park access road | |
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1.87 | 3.01 | US 63 near Frederika | Frederika | 1935 | 1980 | ||
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0.64 | 1.03 | Iowa 141 near Dawson | Dawson | 1935 | 1980 | ||
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2.48 | 3.99 | Iowa 150 near Rowley | Rowley | 1936 | 1980 | ||
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3.36 | 5.41 | Iowa 9 near Grafton | Grafton | 1936 | 1980 | ||
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0.95 | 1.53 | Iowa 141 near Jamaica | Jamaica | 1936 | 1980 | ||
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1.01 | 1.63 | Iowa 333 near Northboro | Northboro | 1937 | 1980 | ||
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0.86 | 1.38 | Rembrandt | US 71 near Rembrandt | 1938 | 1981 | ||
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0.75 | 1.21 | US 71 near Truesdale | Truesdale | 1938 | 1981 | ||
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0.35 | 0.56 | Rowan | Iowa 3 at Rowan | 1938 | 1980 | ||
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6.37 | 10.25 | Packwood | Iowa 1 near Packwood | 1938 | 1981 | ||
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1.55 | 2.49 | Whittemore | US 18 / Iowa 15 near Whittemore | 1938 | 1980 | ||
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1.17 | 1.88 | Macedonia | US 59 near Macedonia | 1938 | 1980 | ||
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0.74 | 1.19 | Cota Creek | Harpers Ferry | 1938 | 2003 | Turned over within city limits | |
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1.07 | 1.72 | Tracy | Iowa 92 near Tracy | 1939 | 1980 | ||
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3.39 | 5.46 | Rutland | US 169 near Humboldt | 1942 | 1980 | ||
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5.54 | 8.92 | Iowa 2 near Moulton | Unionville | 1942 | 1980 | ||
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7.99 | 12.86 | US 71 near Sioux Rapids | Webb | 1942 | 1980 | ||
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0.51 | 0.82 | Harbor Drive in Sioux City | Iowa 970 in Sergeant Bluff | 1942 | 1980 | Airport access road | |
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4.59 | 7.39 | Joice | Iowa 105 near Lake Mills | 1942 | 1980 | ||
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0.67 | 1.08 | Iowa 254 near Rake | Rake | 1954 | 1980 | ||
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0.52 | 0.84 | Davenport Municipal Airport | US 61 3 miles north of Davenport | 1951 | 1979 | ||
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0.35 | 0.56 | Calumet | US 59 at Calumet | 1946 | 1980 | ||
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0.74 | 1.19 | Iowa 10 near Marathon | Marathon | 1946 | 1980 | ||
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2.40 | 3.86 | Ionia | US 18 near Ionia | 1948 | 1980 | ||
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1.72 | 2.77 | Iowa 2 near Denmark | Iowa Army Ammunition Plant southern entrance | 1948 | 1980 | ||
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0.53 | 0.85 | Melbourne | Iowa 330 near Melbourne | 1948 | 1983 | ||
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0.52 | 0.84 | Iowa 175 near Farnhamville | Farnhamville | 1954 | 1980 | ||
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1.24 | 2.00 | Brooklyn | US 6 near Brooklyn | 1956 | 1980 | ||
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4.54 | 7.31 | Truro | I-35 near Truro | 1958 | 1980 | ||
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0.70 | 1.13 | Cushing | US 20 near Cushing | 1958 | 1980 | ||
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0.24 | 0.39 | Lone Tree | Lone Tree city limits | 1958 | 2003 | Turned over within city limits | |
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7.40 | 11.91 | US 169 near Lu Verne | Lu Verne | 1957 | 1980 | ||
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4.72 | 7.60 | US 63 in Waterloo | US 218 in Waterloo | 1960 | 1983 | San Marnan Drive in Waterloo | |
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3.95 | 6.36 | US 20 in Fort Dodge | Fort Dodge Municipal Airport | 1960 | 1980 | ||
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0.44 | 0.71 | Britt city limits | US 18 near Britt | 1961 | 1980 | ||
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0.52 | 0.84 | Iowa 92 near Rose Hill | Rose Hill | 1960 | 1980 | ||
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1.21 | 1.95 | Anamosa | US 151 / Iowa 64 at Anamosa | 1965 | 1980 | ||
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4.00 | 6.44 | Webster–Greene County Line | Iowa 175 near Farnhamville | 1980 | 1982 | ||
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0.74 | 1.19 | Iowa 141 in Perry | Iowa 141 in Perry | 1976 | 1984 | Former section of Iowa 141 | |
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1.07 | 1.72 | US 61 near Burlington | US 61 near Burlington | 1976 | 1980 | Former section of US 61; now Memorial Park Road | |
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0.77 | 1.24 | — | — | 1976 | 1981 | Former section of US 34 parallel to Business US 34 in Burlington | |
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1.57 | 2.53 | Iowa 947 near Manchester | Manchester Fish Hatchery | 1976 | 1980 | Former Iowa 116 | |
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6.76 | 10.88 | US 65 | Iowa 2 near Corydon | 1976 | 1980 | Former section of Iowa 2 | |
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2.51 | 4.04 | — | — | 1976 | 1980 | Former sections of Iowa 2 | |
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2.99 | 4.81 | County Road J18 in Moravia | Iowa 5 near Moravia | 1976 | 1980 | Former section of Iowa 5 | |
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5.70 | 9.17 | Iowa 5 near Moravia | County Road J18 in Moravia | 1976 | 1980 | Former sections of Iowa 5 | |
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0.69 | 1.11 | — | — | 1974 | 1980 | Former section of Iowa 13 in Central City | |
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0.99 | 1.59 | Iowa 13 in Manchester | Iowa 13 in Manchester | 1976 | 1980 | Former section of Iowa 13 | |
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2.72 | 4.38 | Luana city limits | US 18 / US 52 in Monona | 1976 | 1980 | Former section of US 18 / US 52 concurrency; two sections | |
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23.75 | 38.22 | Iowa 187 | Dyersville city limits | 1976 | 1981 | Former section of US 20 | |
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2.65 | 4.26 | US 34 west of Osceola | US 34 near Osceola | 1976 | 1980 | Former section of US 34 | |
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0.18 | 0.29 | — | — | 1978 | 1982 | Former section of US 67 north of Clinton | |
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0.89 | 1.43 | Iowa 38 near Muscatine | Iowa 38 in Muscatine | 1976 | 1980 | Former section of Iowa 38 | |
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1.27 | 2.04 | US 65 / US 69 in Des Moines | Des Moines city limits | 1970 | 1981 | Former section of US 65 / US 69 concurrency | |
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1.58 | 2.54 | Clarinda city limits | Iowa 2 near Clarinda | 1973 | 1982 | Former section of Iowa 2 | |
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0.56 | 0.90 | Villisca city limits | US 71 near Villisca | 1976 | 1980 | Former section of US 71 | |
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3.29 | 5.29 | — | — | 1976 | 1980 | Former section of US 52 | |
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0.52 | 0.84 | US 169 near Burt | Burt | 1976 | 1980 | former Iowa 422 | |
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10.78 | 17.35 | Iowa 2 | US 59 in Shenandoah | 1975 | 1979 | Former section of Iowa 2 | |
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10.17 | 16.37 | Iowa 92 / US 169 in Winterset | US 169 | 1974 | 1980 | Former section of US 169 | |
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1.49 | 2.40 | Iowa 92 in Winterset | Iowa 972 in Winterset | 1976 | 1980 | Former section of Iowa 92 | |
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2.00 | 3.22 | US 218 | Mount Pleasant city limits | 1974 | 1980 | Former section of US 218; formerly Iowa 972 | |
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0.77 | 1.24 | US 34 near Ottumwa | Ottumwa city limits | 1967 | 1980 | Former section of US 34; formerly US 34 Alternate | |
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0.44 | 0.71 | Iowa 150 near Fayette | Fayette city limits | 1967 | 1980 | Former section of Iowa 150; formerly Iowa 991 | |
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0.81 | 1.30 | US 34 west of Chariton | US 34 east of Chariton | 1967 | 1980 | Former section of US 34; formerly Iowa 995 and Iowa 996 | |
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2.24 | 3.60 | Bettendorf city limits | US 67 in Le Claire | 1968 | 1982 | Former section of Iowa 417 | |
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2.22 | 3.57 | Spruce Street in College Springs | Iowa 333 near College Springs | 1961 | 1980 | Former section of Iowa 333 | |
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Routes added
[edit]Number | Length (mi)[14] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
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5.64 | 9.08 | Geode State Park | US 34 in Middletown | 1980 | 2003 | ||
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4.64 | 7.47 | Iowa 9 in Lyon County | MN 91 at the Minnesota state line | 1980 | 2003 | ||
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2.74[15] | 4.41 | I-380 in Cedar Rapids | US 151 in Cedar Rapids | 1984 | current | ||
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15.96 | 25.69 | Iowa 163 in Pella | US 63 / Iowa 146 in New Sharon | 1980 | current | ||
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1.24 | 2.00 | US 34 near Stanton | Viking Lake State Park | 1980 | 2003 | ||
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1.75 | 2.82 | Beed's Lake State Park | Iowa 3 near Hampton | 1980 | 1987 | ||
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20.96 | 33.73 | Iowa 2 in Plano | Iowa 5 near Moravia | 1980 | 2003 | ||
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1.34 | 2.16 | I-35 near Osceola | US 69 at Osceola | 1980 | 2014 | ||
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3.38 | 5.44 | Green Valley State Park | Iowa 25 in Creston | 1980 | 2001 | ||
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4.74 | 7.63 | I-29 / I-80 at Council Bluffs | I-29 at Council Bluffs | 1931 | 2017 | Was decommissioned in 1975, but restored in 1980 | |
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0.56 | 0.90 | Black Hawk Lake State Park | US 71 / Iowa 175 near Wall Lake | 1980 | 2003 | ||
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0.68 | 1.09 | I-80 near Neola | Iowa 191 in Neola | 1980 | 2003 | ||
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5.09 | 8.19 | Wilson State Park | I-29 at Loveland | 1980 | 2003 | ||
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10.67 | 17.17 | Route B at St. Francisville, Mo. | US 218 near Donnellson | 1980 | 2005 | Replaced by Iowa 27 | |
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0.47 | 0.76 | SD 48 near Akron | Iowa 12 in Akron | 1980 | 2003 | ||
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5.75 | 9.25 | Maquoketa Caves State Park | US 61 near Maquoketa | 1980 | 2003 | ||
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1.12[15] | 1.80 | Iowa 16 near Eldon | Iowa 16 in Eldon | 1984 | 2003 | Former section of Iowa 16 | |
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0.29[15] | 0.47 | Iowa 363 in Urbana | Walnut Street in Urbana | 1984 | 1995 | Former section of Iowa 363 | |
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12.61[15] | 20.29 | Center Point | Iowa 150 near Urbana | 1984 | 2003 | Former section of Iowa 150 | |
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12.47[15] | 20.07 | Iowa 920 in Center Point | Hiawatha | 1984 | 1985 | Former section of Iowa 150 | |
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1.27[15] | 2.04 | US 61 in Muscatine | Iowa 22 in Muscatine | 1984 | 1986 | Former section of US 61; became part of an extended Iowa 38 | |
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4.52[16] | 7.27 | — | — | 1982 | 2003 | Former section of US 218; had three sections | |
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24.32 | 39.14 | I-80 / US 6 in Adair | US 6 near Dexter | 1980 | 2003 | Former section of US 6 | |
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6.63 | 10.67 | US 6 in Altoona | US 6 / Iowa 14 in Newton | 1980 | 1988 | Former section of US 6 | |
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19.02 | 30.61 | US 6 / Iowa 38 in Wilton | I-280 / US 6 near Davenport | 1980 | 2003 | Former section of US 6 | |
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17.15 | 27.60 | Iowa 17 near Webster City | CR D20 near Williams | 1980 | 2003 | Former section of US 20 | |
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0.79 | 1.27 | Murray city limits | Maple Street in Murray | 1980 | 2003 | Former section of Iowa 152 | |
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8.47 | 13.63 | I-35 in Ankeny | US 65 in Polk County | 1980 | 2003 | ||
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1.38[16] | 2.22 | I-29 | Mills–Pottawattamie county line | 1982 | 2003 | Former section of Iowa 370 | |
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0.46 | 0.74 | Unionville | Unionville city limits | 1980 | 2003 | Former section of Iowa 369 | |
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12.37 | 19.91 | Independence | Iowa 187 near Masonville | 1980 | 2003 | Former section of US 20 | |
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0.47 | 0.76 | Woodburn | Woodburn city limits | 1980 | 2003 | Former section of Iowa 104 | |
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0.43 | 0.69 | Galva | Galva city limits | 1980 | 1987 | Former section of Iowa 328 | |
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0.56 | 0.90 | US 61 / Iowa 2 in Fort Madison | Fort Madison city limits | 1980 | 2003 | Former section of Iowa 88 | |
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4.61 | 7.42 | I-80 near Altoona | Iowa 931 in Polk County | 1980 | 2003 | ||
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3.35 | 5.39 | US 6 / US 65 in Altoona | Iowa 163 in Pleasant Hill | 1980 | 1994 | Now 34th Avenue/56th Street | |
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3.15[15] | 5.07 | Carbon city limits | Iowa 148 | 1983 | 1993 | Former section of Iowa 95 | |
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1.11[16] | 1.79 | — | — | 1982 | 1986 | Former section of US 61 | |
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1.95 | 3.14 | US 52 near Bellevue State Park | US 52 near Bellevue | 1980 | 2003 | ||
|
Existing route changes
[edit]Number | Change in length | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | ||
---|---|---|---|---|---|---|---|---|
mi[a] | km | |||||||
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12.42 | 19.99 | Iowa 149 near Hedrick | Iowa 92 near Delta | 1934 | current | Extended south from Iowa 92 | |
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-6.99 | −11.25 | Blockton | Iowa 2 near Benton | 1926 | current | Continued south to Blockton | |
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6.18 | 9.95 | Iowa 5 in Des Moines | US 6 in Des Moines | 1926 | current | Extended north from Iowa 5 | |
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3.16 | 5.09 | Dows | I-35 east of Dows | 1920 | 1986 | Extended east from Dows | |
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-12.25 | −19.71 | Protivin | Iowa 9 at Cresco | 1930 | current | Spur route to Protivin removed | |
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15.55 | 25.03 | Kingsley | Iowa 3 at Remsen | 1926 | current | Extended north from Kingsley | |
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3.13 | 5.04 | I-29 near Thurman | Thurman | 1931 | 2003 | Extended west from Thurman | |
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-11.05[b] | −17.78 | US 151 in Cedar Rapids US 218 at Vinton |
Iowa 101 in Benton County Iowa 920 in Benton County |
1941 | current | Rerouted over Iowa 101 in 1984 | |
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1.24 | 2.00 | US 69 at Ankeny | I-35 at Ankeny | 1947 | current | Extended east within Ankeny | |
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11.53 | 18.56 | Iowa 83 near Atlantic | Elk Horn | 1930 | current | Extended south from Elk Horn | |
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19.58 | 31.51 | Iowa 141 near Woodward | Slater | 1931 | current | Rerouted over Iowa 89 | |
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-10.02 | −16.13 | Iowa 21 near Belle Plaine | US 30 near Chelsea | 1934 | current | Continued northwest to US 30 until 1980 | |
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-2.20[c] | −3.54 | Upper South Amana Iowa 149 at Amana |
US 6 / Iowa 149 at South Amana East Amana |
1931 | current | Continued east to East Amana and south to Upper South Amana until 1980 | |
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6.94 | 11.17 | Iowa 330 near Baxter | Baxter | 1931 | 1997 | Extended west from Baxter | |
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9.37 | 15.08 | Kellogg | Iowa 14 near Laurel | 1931 | current | Extended north from Kellogg in 1980 | |
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17.29 | 27.83 | Dunkerton | Iowa 150 at Oelwein | 1935 | current | Rerouted over Iowa 190 | |
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-3.77 | −6.07 | Fremont–Page county line near Northboro I-29 at Hamburg |
US 71 near Braddyville US 59 near Northboro |
1935 | current | Route swap | |
|
Notes
[edit]References
[edit]- ^ 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.
- ^ Roads and Fuel Taxes (PDF) (Chapter 1108, Laws of the 67th General Assembly). Iowa General Assembly. 1978. pp. 575–588. Retrieved August 19, 2020.
- ^ a b Evans, Randy (August 17, 1980). "Officials Chafe at 'Inheriting' State Highways". The Des Moines Register. pp. 1, 12. Retrieved August 19, 2020.
- ^ a b Piller, Dan (July 29, 1979). "Roads: An Explosive Issue for the 1980s". The Des Moines Register. p. 1. Retrieved August 19, 2020 – via Newspapers.com.
- ^ 1979 Iowa Code (1978). "Establishment, Alteration, and Vacation of Highways". §§306.1–306.42 (PDF). pp. 1397–1405.
{{cite book}}
: CS1 maint: numeric names: authors list (link) - ^ Hoffmann, Rep. Betty (March 18, 1980). "Legislative report..." The Muscatine Journal. p. 4. Retrieved August 20, 2020 – via Newspapers.com.
- ^ Schmidt, Vernice (August 31, 1979). "Grundy County Wins First Round in Battle on Highway Jurisdiction". The Waterloo Courier. p. 16. Retrieved August 20, 2020 – via Newspapers.com.
- ^ "Lyon, Sioux Roads Reshuffle Talk Set". Sioux City Journal. December 13, 1980. p. 3. Retrieved August 20, 2020 – via Newspapers.com.
- ^ "Section of Highway 150 May Lose Primary Status". The Gazette. Cedar Rapids. August 19, 1979. p. 20A. Retrieved August 20, 2020 – via Newspapers.com.
- ^ 1979 Iowa Code (1978), p. 1400.
- ^ Bunton, Kristie (January 18, 1984). "Local Road: The Old Highway Nobody Wants". Iowa City Press-Citizen. p. 2. Retrieved August 20, 2020 – via Newspapers.com.
- ^ Walsh, Tom (June 25, 1985). "IDOT Officials May Hope to Open Highway, Close Deal". The Gazette. Cedar Rapids. p. 11. Retrieved August 20, 2020 – via Newspapers.com.
- ^ a b 1978 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1978. Retrieved August 19, 2020.
- ^ a b c d 1980 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1980. Retrieved August 19, 2020.
- ^ a b c d e f g h 1984 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. August 1985. Retrieved August 19, 2020.
- ^ a b c d 1982 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1982. Retrieved August 19, 2020.