Iowa Highway 37: Difference between revisions

Iowa Highway 37 begins at an [[intersection (road)|intersection]] with [[Iowa Highway 175|Iowa&nbsp;175]] east of [[Turin, Iowa|Turin]] and adjacent to Iowa&nbsp;175's crossing of the [[Maple River (Iowa)|Maple River]]. The first {{convert|1+1/2|mi|spell=in}} of the route are part of the Loess Hills Scenic Byway.<ref name="current DOT map">{{cite map|publisher=[[Iowa Department of Transportation]]|title=Transportation Map|url=http://www.iowadotmapsiowadot.comgov/maps/msp/pdf/current/stmapmain.pdf|year=2010|accessdate=December 4, 2010}}</ref> The highway travels east and then southeast through the [[Loess Hills]], a region of dunes east of the [[Missouri River]] created by wind-deposited [[loess|silt]] from the Missouri River valley. At [[Soldier, Iowa|Soldier]], Iowa&nbsp;37 exits the Loess Hills and meets [[Iowa Highway 183|Iowa&nbsp;183]]. From Soldier, the highway travels {{convert|13|mi}} to the southeast to [[Dunlap, Iowa|Dunlap]]. In Dunlap, Iowa&nbsp;37 overlaps [[U.S. Highway 30 in Iowa|US&nbsp;30]] for {{convert|1/4|mi|m|spell=in}}. Eastbound Iowa&nbsp;37 overlaps westbound US&nbsp;30; this phenomenon is known as a [[wrong-way concurrency]]. Between Dunlap and [[Earling, Iowa|Earling]], Iowa&nbsp;37 travels in a stairstep path to the south and east for {{convert|13|mi}}. At Earling, the highway intersects the northern end of [[Iowa Highway 191|Iowa&nbsp;191]]. Its last section is {{convert|4|mi|spell=in}} long, connecting Earling to US&nbsp;59.<ref name="IowaDOT" />

Originally, Iowa Highway 37 began at [[U.S. Highway 75 in Iowa|US&nbsp;75]] in Onawa to US&nbsp;59 east of [[Earling, Iowa|Earling]]. The westernmost {{convert|8|mi|spell=in}} of the route were [[concurrency (road)|overlapped by]] [[Iowa Highway 175|Iowa&nbsp;175]]. In 1966, Iowa&nbsp;37 was truncated to its current western end near the [[Maple River (Iowa)|Maple River]].<ref name=DOT1967>{{cite map|publisher=[[Iowa State Highway Commission]]|url=http://www.iowadotmapsiowadot.comgov/maps/msp/historical/pdf/1967_front.pdf|title=Iowa State Highway Map|year=1967|accessdate=December 4, 2010}}</ref> In 1971, a new section of US&nbsp;59 was opened {{convert|1|mi|spell=in}} to the west of the former alignment. As a result, Iowa&nbsp;37 was extended {{convert|1|mi|spell=in}} north and {{convert|6|mi|spell=in}} east to [[Irwin, Iowa|Irwin]], absorbing Iowa&nbsp;268<ref name=DOT1972>{{cite map|publisher=[[Iowa State Highway Commission]]|url=http://www.iowadotmapsiowadot.comgov/maps/msp/historical/pdf/1972_front.pdf|title=Iowa State Highway Map|year=1972|accessdate=December 4, 2010}}</ref> The section from US&nbsp;59 to Irwin was short-lived. In 1980, the section east of US&nbsp;59 was turned over to [[Shelby County, Iowa|Shelby County]].<ref name=DOT1981>{{cite map|publisher=[[Iowa Department of Transportation]]|url=http://www.iowadotmapsiowadot.comgov/maps/msp/historical/pdf/1981_front.pdf|title=Iowa State Highway Map|year=1981|accessdate=December 4, 2010}}</ref>