Directions
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Getting There
Allen Bridge was built in 1903 and is the longest single span bridge across the Niobrara (188'). It is listed on the National Register of Historic Structures.
NPS Photo
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Did You Know?
An unusual hybrid of aspen occurs in a few isolated canyons in the Niobrara River valley -- a remnant of the last ice age. Click "More" to visit the Niobrara National Scenic River "Plants" page. More...