We are in Burlington, Iowa at the edge of the Mississippi River looking over toward Henderson County, Illinois. This Chicago, Burlington & Quincy Railroad train is about to cross a bridge built in 1868 by George S. Morison of New Bedford, Massachusetts.
He is known for many steel truss bridges he designed, including several crossing the Missouri River, Ohio River and the Mississippi River. The Memphis Bridge, built in 1891, is considered to be his crowning achievement, as it was the largest bridge he would design and the first bridge to span the difficult Lower Mississippi River.
This particular bridge is known as a through truss bridge. It was built in 1868 and the superstructure was replaced and rebuilt in 1893. It did last a long time but was finally replaced by a new bridge in 2012.
The original design is a one pin-connected swing span and six pin-connected Whipple through truss spans. Swing span being replaced by through-truss lift span of 307.5 feet. In addition to the lift span, one fixed span on the east side was replaced with three smaller, temporary spans until completion of the lift span.
This is what it looked like before it was replaced:
+40.79854, -91.09205 (decimal degrees)
40°47'55" N, 91°05'31" W (degrees°minutes'seconds")