DXN Bridge over Missouri River
Encyclopedia
The DXN Bridge over the Missouri River
Missouri River
The Missouri River flows through the central United States, and is a tributary of the Mississippi River. It is the longest river in North America and drains the third largest area, though only the thirteenth largest by discharge. The Missouri's watershed encompasses most of the American Great...

 is one of a group of thirty-one bridges in Wyoming that were collectively listed on the National Register of Historic Places
National Register of Historic Places
The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

 as excellent examples of steel truss bridges of the early 20th century. The DXN Bridge is located in Crook County, Wyoming. It is a single-span of about 72 feet (21.9 m), an 8-bay Pratt pony truss on Crook County Road 18-200 (Little Missouri Road). It was built abut 1920. The bridge is unique in lacking inclined end posts.

The Wyoming bridges were listed on the National Register of Historic Places
National Register of Historic Places
The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

in 1985.
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