This bridge is over 100 years old, built in 1905 I think. It was one of the first if not the first railroad bridges on the upper flows of the Missouri River in the US. The steam in the background is from a local refinery built in the 1950s and still going strong. The river was mostly ice-free thanks to recent warmer weather, especially over the weekend (73F). So I assume the ice broke up somewhere further upstream and floated down to my local section of the river. Contax G 90mm on an A6000.