{"nrhp_refnum":"03000048","name":"Ouaquaga Lenticular Truss Bridge","other_names":[],"category":"structure","location":{"address":"Dutchman Rd. over Susquehanna R","address_restricted":false,"city":"Ouaquaga","county":"Broome County","state":"NY","lat":42.12349212100003,"lon":-75.64728378399997,"geom_source":"nps_gis"},"listed_date":"2003-02-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A double-span, through lenticular truss metal bridge carrying Dutchtown Road over the Susquehanna River at Ouaquaga, Broome County, New York, connecting the towns of Windsor and Colesville. It was fabricated by the Berlin Iron Bridge Company and accepted in 1889.","why_significant":"The nomination argues it is an outstanding and exceptionally intact example of a double-span lenticular truss bridge in New York's Southern Tier. Its 170-foot spans are among the longest in the state. It is also one of the few of its type still in vehicular use, and the only multiple-span through lenticular truss in use in New York.","narrative":"Carrying Dutchtown Road across the Susquehanna River at Ouaquaga, this 343-foot iron bridge links the towns of Windsor and Colesville. It has two 170-foot lenticular truss spans, each with ten panels, resting on stone abutments and a center pier. Decorative metal cresting and a builder's plate ornament the structure. The Berlin Iron Bridge Company of East Berlin, Connecticut, built it in 1888-89 for $14,600, split between the two towns, after a wooden toll bridge at the site was destroyed. The design relied on William O. Douglas's patented lenticular truss, which drew criticism from engineers but sold widely. The bridge is notable for its exceptionally long spans and high integrity, despite a 1963 deck replacement and 1977 pier reinforcement after flood damage. It remains the only multiple-span, through lenticular truss bridge still carrying vehicles in New York, which is the basis for its listing under engineering.","period_of_significance":"1888","architect_builder":"Berlin Iron Bridge Company, East Berlin, Connecticut","architectural_style":"no style","criteria":["C"],"status_note":"Still in use as a vehicular bridge, with a posted load limit of six tons; floor and deck replaced in 1963 and pier encased after flood damage in 1977.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:52.602896-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/03000048.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/03000048/df55c4aa00-800.webp","url_1600":"https://nationalhistoricalregister.com/media/03000048/df55c4aa00-1600.webp","licence":"Public domain","author":"Martin Stupich","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Ouaquaga_Bridge,_Dutchtown_Road,_spanning_Susquehanna_River,_Ouaquaga_(Broome_County,_New_York).jpg\" rel=\"noopener\">Martin Stupich</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Ouaquaga_Bridge,_Dutchtown_Road,_spanning_Susquehanna_River,_Ouaquaga_(Broome_County,_New_York).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75316593","wikipedia":"https://en.wikipedia.org/wiki/Ouaquaga_Lenticular_Truss_Bridge","wikidata":"https://www.wikidata.org/wiki/Q14707144"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/broome-county/ouaquaga-lenticular-truss-bridge-03000048/"}