Location: Niagara Falls, NY
GPI Contact: Timothy Woodbury, P.E.
Description: GPI is performing Phases I-IV (Preliminary Engineering) for the rehabilitation / replacement of the American Falls Bridges. Located in the historic Niagara Falls State Park within 1000 ft. of the brink of Niagara Falls, these two bridges connect the Mainland USA to Goat Island via Green Island and provide a direct linkage within the Park for trolley transport of nearly 8 million visitors per year to and from Goat Island. Both structures are 3-span Thatcher Concrete Arch Bridges (an early form of a filled reinforced concrete arch) faced with stone masonry that had deteriorated to the point that necessitated a temporarily closure in 2004. To maintain this critical linkage within the park, a temporary truss structure was installed over the arch structures, a short-term fix until a long-term solution was developed. In addition to eliminating structural deficiencies, restoring trolley service to the island and maintaining the historic character of the bridges, a key project objective is to improve accessibility to meet current ADA requirements.