Marty Bernard shared a Roger Puta Photo AT&SF Bridge on the Transcon over the Missouri River at Sibley, MO. Roger Puta shot it in August 1983.
Note in a satellite image that there is a significant steel trestle across a flood plain and then an earth embankment on the east side. And there are two sharp curves to cross the river at 90-degrees. It appears they chose a wide, but shallow, part of the river for the crossing.