The lead contractor for a Mississippi River bridge is involved in a now-public feud with the state of Iowa over whether the bridge is buildable. The I-74 bridge is meant to replace a bridge on the same location connecting Moline, Ill, and Bettendorf, Iowa. Known as the Iowa-Illinois Memorial Bridge, the bridge is a pair of suspension bridges located near the geographic center of the Quad Cities. The original bridge was designed by engineer Ralph Modjeski. The first span opened in 1935 as a toll bridge. In 1961, an identical twin span, built from the same blueprint, opened to facilitate...