{"nrhp_refnum":"79002316","name":"Kreigbaum Covered Bridge","other_names":[],"category":"structure","location":{"address":"E of Elysburg on T 459, Ralpho/Cleveland Townships","address_restricted":false,"city":"Elysburg","county":"Northumberland County","state":"PA","lat":40.84748758300003,"lon":-76.50764411999995,"geom_source":"nps_gis"},"listed_date":"1979-08-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"A single-span covered timber queenpost truss bridge carrying T459 over the South Branch of Roaring Creek east of Elysburg, Northumberland County, Pennsylvania. It is listed as Northumberland County bridge #60.","why_significant":"The nomination treats the bridge as one of seven surviving covered bridges in Northumberland County that together illustrate 19th-century wood bridge technology and the development of transportation networks. It is valued as an example of the queenpost truss, a design used for spans somewhat longer than a kingpost could handle. The form is part of a thematic group nomination for the county's covered bridges.","narrative":"Built in 1876 by George W. Keefer, the Kreigbaum Covered Bridge is a single-span timber truss structure over the South Branch of Roaring Creek east of Elysburg in Northumberland County, Pennsylvania. It has a clear span of 52 feet between stone masonry abutments and a total length of 62 feet 1 inch. The roadway inside the structure is 13 feet 8 inches wide, and the floor is laid with transverse planks topped by longitudinal running boards. The bridge uses a queenpost truss, a design that is an enlarged kingpost with an additional longitudinal top chord and was suited to spans slightly longer than a kingpost could carry. It is one of seven covered bridges in the county recorded in a thematic group, which together show how 19th-century wood bridge building developed and how the county's road network was served. The bridge's structural type and its surviving construction are the basis for its recognition. The recorded load limit is 3 tons, and the bridge carries a vertical clearance of 11 feet 9 inches.","period_of_significance":"1876","architect_builder":"George W. Keefer (builder)","architectural_style":null,"criteria":[],"status_note":"Overall condition recorded as fair.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:29.221685-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/79002316.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79002316/e5ea71f731-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79002316/e5ea71f731-1600.webp","licence":"CC BY-SA 3.0","author":"Ruhrfisch","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Kreigbaum_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:Kreigbaum_Covered_Bridge_1.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993432","wikipedia":"https://en.wikipedia.org/wiki/Kreigbaum_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q6436603"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/northumberland-county/kreigbaum-covered-bridge-79002316/"}