A bridge built in the 1870s once existed at this location. It was removed and replaced by the Northern Pacific Railroad in 1891. The new bridge featured two Pratt Through Truss spans. On May 10, 1974, the load on a rail car shifted, causing the train to hit and damage the sides of the east span. The span failed, and a number of railroad cars ended up in the Mississippi River. The failed railroad span was beyond repair, so the Burlington Northern brought in a 1900 era span that once crossed the Columbia River in Washington. That span, a Warren through truss span, was installed. The result is that the bridge has two different style and sized truss spans. It looks unusual, but it serves its purpose.
