Iowa Highway 51

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Iowa Highway 51 marker

Iowa Highway 51
Route information
Maintained by Iowa DOT
Length: 11.007 mi[1] (17.714 km)
Major junctions
South end: US 18 / US 52 at Postville
North end: Iowa 9 near Waukon
Location
Counties: Allamakee
Highway system
Iowa 48 US 52

Iowa Highway 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. Its southern terminus is at U.S. Highway 52 and U.S. Highway 18 in Postville. Its northern terminus is at Iowa Highway 9 near Waukon.

Route description[edit]

Iowa Highway 51 begins at an intersection with US 18 and US 52 in Postville. It leaves Postville heading in an almost directly northward alignment. It passes by a number of small streets along the way; there are no major intersections along the route. Southwest of Waukon, it terminates at an intersection with IA 9.

History[edit]

When it was originally designated, IA 9 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 IA 13 (changed to IA 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 IA 9, which is the present-day alignment.

Major intersections[edit]

The entire route is in Allamakee County.

Location Mile[1] km Destinations Notes
Postville 0.000 0.000 US 18 / US 52
Ludlow Township 11.007 17.714 Iowa 9
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]