In 1931, the city of Davenport along with a group of local businessmen formed the Davenport Bridge Commission to construct the new bridge. Moline refused to grant the franchise for the bridge and the early years of the Great Depression made it difficult for the businessmen to finance it on their own without the city’s help. After several setbacks because of design and location issues, construction for the first span began in 1934. It was designed by engineer Ralph Modjeski. The first span opened on November 18, 1935, as a toll bridge. Tolls were set at 15 cents for passenger vehicles and light trucks, 30 cents for heavy trucks, and 5 cents for pedestrians to use the sidewalk. In 1961, an identical twin span, built from the same blueprint, opened to facilitate increased traffic demands. Money from tolls paid for most of the new span. The upstream span was the older of the two. Tolls were discontinued in 1970. The twin spans were merged with Interstate 74 in 1975.