South Washington Street Parabolic Bridge, Iron truss bridge in Binghamton, United States
South Washington Street Parabolic Bridge is an iron truss structure spanning the Susquehanna River with three identical through trusses and an 11 meter (36 foot) wide deck. The crossing links both riverbanks and serves as a key passage through the Binghamton area.
The bridge was constructed in 1886 by the Berlin Iron Bridge Company following patented designs by engineer William O. Douglas. This structure represents a key phase of iron bridge engineering in the region during the late 1800s.
The structure represents a focal point of local transportation heritage, leading to its registration in the National Register of Historic Places in 1978.
The bridge underwent major renovation work in 2016 and is now accessible for pedestrians and cyclists. The crossing offers a practical route for non-motorized travel across the river.
This bridge stands as the longest multiple-span lenticular truss bridge built in New York State during the nineteenth century.
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