The six Beale Wagon Road bridges built in Indian Territory by 1860 were destroyed during the Civil War as noted above. But to me, they did not die! Consider that the King Bridge Company built a son of Whipple's Ft. Smith bridge in Ft. Laramie, Wyoming in 1875, as Stephen B. McCartney has noted. I recently discovered that Fort Worth built a beautiful six-span great-great-grandson of the Ft. Smith bridge in 2013. Study the following three websites, and you may see the historical connection.
Fort Smith, Arkansas in 1860 had a two-span bowstring arch truss bridge built over the Poteau River:
http://bridgehunter.com/ny/columbia/shaw/ (an existing example)
Fort Laramie, Wyo. in 1875 had a three-span bowstring arch truss bridge built over the North Platte River:
Fort Worth, Texas in 2013 had a six-span bowstring arch truss bridge built over the West Trinity River:
http://www.sundt.com/projects/tarrant-county-seventh-street-bridge/ (five pictures in album)
It is interesting to note that the early Whipple bowstring arch bridges in New York also had pedestrian crosswalks on both sides just like the new bowstring bridge coming out of downtown Fort Worth on West 7th Street has. And to think that Beale’s Wagon Road in Indian Territory had six bowstring arch truss bridges in 1860 is still amazing to me.
I will always consider the six arches in the new Fort Worth bowstring arch bridge as being historically symbolic of a national lost cause—that being of trying to build the First Interstate Route to the Pacific thru indian Territory, which had six bowstring arch truss bridges.
Just thought this recent discovery was too interesting to let pass.