{"nrhp_refnum":"88000844","name":"Bridge in Brown Township","other_names":[],"category":"structure","location":{"address":"LR 41022 over Pine Creek","address_restricted":false,"city":"Hillborn","county":"Lycoming County","state":"PA","lat":41.49535686300004,"lon":-77.49723588799998,"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 steel lattice truss bridge carrying a vehicular road over Pine Creek in Brown Township, Lycoming County, Pennsylvania, near the village of Slate Run. It was built in 1890 by the Berlin Iron Bridge Company of East Berlin, Connecticut.","why_significant":"The nomination argues the lattice truss type is unusual and was infrequently built because of its structurally indeterminate nature. It describes the bridge as a well preserved example of a fairly rare bridge type, with riveted plates, angles, lacing bars and riveted joints. The company's other surveyed Pennsylvania bridges are lenticular trusses, which makes this lattice example distinctive. The area of significance is engineering.","narrative":"Steel lattice truss bridge carrying a road over Pine Creek in Brown Township, Lycoming County, Pennsylvania, about one mile north of the village of Slate Run. It was built in 1890 by the Berlin Iron Bridge Company of East Berlin, Connecticut, and spans 196.25 feet. The lattice truss configuration, also termed a Warren quadrangular, is built of riveted plates, angles and lacing bars, with all joints riveted. The company was known mainly for lenticular trusses, and only two of its other bridges in the Pennsylvania highway bridge survey are known, both lenticular. Because the lattice truss type was infrequently built, owing to its structurally indeterminate nature, the bridge is regarded as a well preserved example of a fairly rare design. A new open steel deck was installed in 1960, and the bridge remains in vehicular use. Its significance lies in engineering.","period_of_significance":"1890","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Altered in 1960 with a new open steel deck; in vehicular use.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.051576-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000844.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000844/5eda195a3f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000844/5eda195a3f-1600.webp","licence":"CC BY-SA 3.0","author":"Finetooth","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Brown_township_bridge_pano.jpg\" rel=\"noopener\">Finetooth</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Brown_township_bridge_pano.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993352","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Brown_Township","wikidata":"https://www.wikidata.org/wiki/Q4966342"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lycoming-county/bridge-in-brown-township-88000844/"}