The NYS Thruway Authority retained Bergmann Associates to perform project scoping to evaluate long term alternatives for the four bridges carrying I-190 over the Niagara River onto and off of Grand Island located near Buffalo, NY. Based on the structural inspections performed during the scoping of the project, it was determined that structural repairs were necessary to maintain the bridges and ensure the safety of the public.
The two North Grand Island bridges, southbound and northbound, are each 4025 feet long and consist of eleven truss spans and five girder spans over the Niagara River. The Northbound bridge was originally constructed in 1935, and is listed as a Nationally and Exceptionally Significant Structure on the Federal Interstate Highway System. The southbound bridge was constructed in 1963 as a companion to the 1935 bridge.