Iowa Highway 51

Iowa Highway 51 (Iowa 51) is a state highway that runs from north to south in northeast Iowa. Contained entirely by Allamakee County, it is only 11 miles (18 km) in length. It begins at U.S. Highway 18 (US 18) and US 52 in Postville and ends at Iowa 9 near Waukon.

Iowa Highway 51 marker

Iowa Highway 51

Iowa 51 highlighted in red
Route information
Maintained by Iowa DOT
Length10.909 mi[1] (17.556 km)
Major junctions
South end US 18 / US 52 in Postville
North end Iowa 9 near Waukon
Location
CountryUnited States
StateIowa
CountiesAllamakee
Highway system
← Iowa 48→ US 52

Route description
Iowa 51 is the street in the foreground in Postville.

Iowa 51 begins at the intersection of Tilden and Lawler Streets in Postville. US 18 and US 52 form the southern and western forks of the intersection, Tilden Street continues east, and Iowa 51 begins heading north along Lawler Street through Postville's downtown area. The highway crosses a line of the Dakota, Minnesota and Eastern Railroad and leaves Postville heading in an almost directly northward alignment. The only curves along the route come as the highway descends into and then ascends out of the Yellow River valley. Between Waukon and Decorah, the route terminates at an intersection with Iowa 9.[2]

History

When it was originally designated, Iowa 51 was not a paved highway. The route was fully paved by 1935, with the segment from the Yellow River south to Postville being repaved in 1969. Its initial alignment also extended the highway into Waukon, but was shortened to end at an intersection with the old alignment of Iowa 13 (changed to Iowa 76 in 1969) on December 8, 1924. The highway's alignment again changed in December 1968, when it was truncated to run from Postville to an intersection with Iowa 9, which is the present-day alignment.

Major intersections

The entire route is in Allamakee County.

Locationmi[1]kmDestinationsNotes
Postville0.0000.000 US 18 / US 52 – Clermont, Calmar, Monona
Ludlow Township10.90917.556 Iowa 9 – Waukon, Decorah
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. 2014 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2014. Retrieved October 17, 2015.
  2. Google (October 17, 2015). "Iowa Highway 51" (Map). Google Maps. Google. Retrieved October 17, 2015.
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