{"nrhp_refnum":"79003187","name":"Hollingshead Covered Bridge No. 40","other_names":[],"category":"structure","location":{"address":"SR 405","address_restricted":false,"city":"Catawissa","county":"Columbia County","state":"PA","lat":40.95185191300004,"lon":-76.44751634499994,"geom_source":"nps_gis"},"listed_date":"1979-11-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"Hollingshead Covered Bridge No. 40 is a covered timber truss bridge near Catawissa in Columbia County, Pennsylvania. It is 116.9 feet long with a roadway width of 15.33 feet and 11 feet of clearance.","why_significant":"The nomination argues the bridge is significant under engineering and transportation. It uses the Burr Truss Arch design, and the form notes that covered bridges were built in Columbia County to serve towns, farms, and saw and grist mills. The form states that such bridges have not been built in the county for the last half century, which it presents as making their design and engineering unique.","narrative":"Hollingshead Covered Bridge No. 40 is a covered timber bridge near Catawissa in Columbia County, Pennsylvania, measuring 116.9 feet long with a roadway 15.33 feet wide and 11 feet of clearance. It follows the Burr Truss Arch design, with five diagonal beams on either side of a central king post and an arch superimposed over each truss. The roof is metal, the north portal is a curved arch of horizontal boards, and the walls are board and batten with some plain vertical plank repairs. The flooring is horizontal boards with two runways. No steel beams were added to the undergirding or deck, and the original stone and mortar abutments remain basically intact, though concrete reinforcement has been added in places. The bridge is significant for its engineering and its role in transportation. Covered bridges like it were built to carry travel between growing towns and the farms and saw and grist mills that depended on them. Its construction is considered unique because covered bridges have not been built in Columbia County for about fifty years.","period_of_significance":null,"architect_builder":"Peter Ent (builder)","architectural_style":"Burr Truss Arch","criteria":[],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:34.296083-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/79003187.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79003187/69425f852f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79003187/69425f852f-1600.webp","licence":"CC BY-SA 3.0","author":"Ruhrfisch","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Hollingshead_Covered_Bridge_1.JPG\" rel=\"noopener\">Ruhrfisch</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:Hollingshead_Covered_Bridge_1.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992804","wikipedia":"https://en.wikipedia.org/wiki/Hollingshead_Covered_Bridge_No._40","wikidata":"https://www.wikidata.org/wiki/Q5881454"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/columbia-county/hollingshead-covered-bridge-no-40-79003187/"}