The Ashton/Tetonia Rail Trail

The AT Rail Trail is the best kept secret in Idaho!  

Completed in 2010, this converted rail bed features almost 30 miles of breathtaking riding away from major County roads, 3 dramatic train trestles, and views of the Tetons that are unsurpassed.  

The surface is a smooth and packed gravel/dirt combination that is well suited for riders of all ages and abilities.  We do recommend keeping the road bikes at home and using a tire that is at least 32c in width (pathway bikes, mountain bikes, and kids bikes work very well).

Rail Trail Map

Thornton Waite of Idaho Falls, Idaho, writes:
"My favorite rail-trail bridge is the Conant Creek Bridge on the 
Ashton-Tetonia Trail in eastern Idaho. I like the bridge because of its historical significance as well as its spectacular views: of the Teton Mountains to the east, the view below of Conant Creek, and the rolling hills surrounding it. The Conant Creek Bridge is approximately 120 feet above the creekbed, and the three spans are each 164 feet long. The overall bridge is 572 feet long, including the end deck girder segments.

This bridge is a Pegram deck truss bridge, a unique design with the outer chords all the same length. It was erected in 1894 as part of the Oregon Short Line's bridge across the Snake River at American Falls, Idaho, and replaced in 1911 since the bridge design was not suitable for main line service. Since the Pegram truss bridge had pin connections, the bridge was simply disassembled and installed over Conant Creek on the Teton Valley Branch, which was being built at that time. In 1917 the Pegram truss was strengthened with a center truss.

The Teton Valley Branch line over Conant Creek was abandoned in 1990 and the tracks pulled up in 1992, but the bridges were left in place. The out-of-service line was opened as a rail-trail in the summer of 2011. Today the trail is a non-motorized recreational trail used by trail bikes, hikers and horses. In the winter months it is open to snow machines." courtesty of