Benton Street Bridge, Road bridge in Iowa City, United States
The Benton Street Bridge features a continuous five-span deck plate-girder structure spanning across the Iowa River at coordinates 41°39′02″N 91°32′20″W.
Edward L. Ashton designed this structure in 1947, making it the first all-welded steel bridge in Iowa when construction finished in 1949.
Robert Carstens documented the entire construction process through 131 photographs and newspaper clippings, now preserved at the Iowa Department of Transportation.
The bridge served as a critical transportation link in the south central area of Iowa City until its replacement with a modern structure in 1989.
This engineering project introduced new welding techniques that influenced future bridge construction methods across the United States.
Location: Iowa
GPS coordinates: 41.65060,-91.53900
Latest update: November 28, 2025 14:29
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