North Avenue Bridge

In 2000, an investigation of the North Avenue Bridge over the Fox River indicated that the superstructure and portions of the substructure were in need of replacement to carry current design loads. The existing concrete arches and underlying arch foundations would be allowed to remain with limited structural repairs. Because of the historical nature of the structure, the LONCO team designed a new structure that would mimic the original look and character of the nearly 80-year-old bridge. The original ornamental concrete railing along with the ornamental lights were recreated on the new structure. Likewise, identical spandrel arch beam size and spacing, and column size and spacing, were used in order to obtain historical agency concurrence on the project. Precast elements were used for the railing, transverse beams, deck planks, and other members in order to reduce the amount of falsework required and speed construction of the project.

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