{"nrhp_refnum":"88000808","name":"Bridge in Clinton Township","other_names":[],"category":"structure","location":{"address":"LR 60010 over Scrubgrass Creek","address_restricted":false,"city":"Kennerdell","county":"Venango County","state":"PA","lat":41.23816461800004,"lon":-79.85408752299998,"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 Pratt through truss highway bridge over Scrubgrass Creek in Clinton Township, Venango County, Pennsylvania, carrying vehicular traffic. It was built in 1887 by the Smith Bridge Company of Toledo, Ohio.","why_significant":"The nomination describes the bridge as a representative example of a Pratt through truss bridge, with typically configured members and a bridge plate on the portal as its only decorative feature. It is argued to be a well-preserved example of a bridge type used frequently in northwestern Pennsylvania, and the significance is listed under engineering.","narrative":"A single-span Pratt through truss highway bridge crossing Scrubgrass Creek in Clinton Township, Venango County, Pennsylvania. The steel superstructure is 106 feet long overall, and the nominated area is a rectangle 136 feet by 25 feet, bounded by the outside corners of the wing walls. The bridge was built in 1887 by the Smith Bridge Company of Toledo, Ohio, and its only decorative element is a bridge plate on the portal. Its steel members were produced in Carnegie, Pennsylvania. Its significance rests on engineering: it is regarded as a representative example of the Pratt through truss type, which was used frequently in northwestern Pennsylvania. The bridge is considered well preserved as an example of that type. Alterations include a 1940 structural steel repair, the 1980 replacement of a cut stone box culvert with twin 48-inch metal pipe, and an asphalt overlay on the wooden deck.","period_of_significance":"1887","architect_builder":"Smith Bridge Company, Toledo, Ohio","architectural_style":null,"criteria":[],"status_note":"Asphalt overlay on the wooden deck; 1940 structural steel repair; 1980 removal of cut stone box and replacement with twin 48-inch metal pipe. Marked as altered.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:37.230973-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000808.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000808/f7080b37f8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000808/f7080b37f8-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_Clinton_Township.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_in_Clinton_Township.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993961","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Clinton_Township","wikidata":"https://www.wikidata.org/wiki/Q4966345"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/venango-county/bridge-in-clinton-township-88000808/"}