Sketch: Yellowstone River bridge

A sketch I made during a recent trip to Yellowstone National Park in about 1.5 hours, near near 44.920112, -110.406099. The air was thin and the sun was hot. At the time, I was recovering from tendinitis incurred at the Bozeman Triathlon a few days prior and was using a walking stick to cope. I stuck close to the road and kept an eye out for bears and buffalo. As far as I know, this bridge is unnamed but spans the Yellowstone River.