Historic Bridges
At IGA, we pride ourselves at being one of the few firms which brings the experience of having worked on unique Historic Bridge Projects across the American Midwest, ranging from covered bridges to old truss bridges and a few unique ones.
LaPorte Street Footbridge, Plymouth, Indiana
LaPorte Street Footbridge is a historic Kingpost Steel Bridge located in Plymouth, Indiana. Built in 1898 by the Rochester Bridge Company, the superstructure of the bridge consisted of a wooden deck, supported by 3 slender Wide-Flange beams. The existing beams had advanced deterioration and the bridge was in poor condition, with a perceptible lateral sway in the bridge of over 4 inches under the weight of ONE person walking on it.
The retrofit and rehabilitation consisted of