{"nrhp_refnum":"88000833","name":"Bridge in Oil Creek Township","other_names":[],"category":"structure","location":{"address":"LR 20132 over Oil Creek","address_restricted":false,"city":"Titusville","county":"Crawford County","state":"PA","lat":41.62946002100006,"lon":-79.70264871099994,"geom_source":"nps_gis"},"listed_date":"1988-06-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A single-span pin-connected Pratt through truss highway bridge over Oil Creek in Oil Creek Township, Crawford County, Pennsylvania. The form gives its length as 124 feet overall.","why_significant":"The nomination describes the bridge as a typical example of the Pratt through truss and a very well preserved example of a bridge type used frequently in northwestern Pennsylvania. It is one of fourteen representative examples of this truss type included in the nomination. The area of significance is engineering.","narrative":"Built in 1896 by the Massillion Bridge Company, this single-span highway bridge over Oil Creek in Oil Creek Township, Crawford County, is a Pratt through truss, a form in which vertical members are paired with diagonals sloping toward the centre. The structure is 124 feet long overall and 25 feet wide, carried on steel superstructure supplied by Cambria Steel Company, with stone and masonry abutments and wing walls. The truss is pin-connected, with eyebar members and diamond-pattern railings. The bridge is one of fourteen representative examples of this truss type included in a group nomination of Commonwealth-owned highway bridges. Its significance rests on engineering: it is regarded as a very well preserved example of a bridge type common in northwestern Pennsylvania. A timber deck was repaired in 1978, and the form records the bridge as altered from its original state. Its use is vehicular, carrying traffic across the creek in a rural setting.","period_of_significance":null,"architect_builder":null,"architectural_style":"Pratt through truss","criteria":[],"status_note":"The form records a 1978 repair of the existing timber deck.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.009495-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000833.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000833/984459b13f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000833/984459b13f-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_Oil_Creek_Township,_road_closed_sign.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_in_Oil_Creek_Township,_road_closed_sign.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992858","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Oil_Creek_Township","wikidata":"https://www.wikidata.org/wiki/Q4966371"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/crawford-county/bridge-in-oil-creek-township-88000833/"}