{"nrhp_refnum":"80003631","name":"Glessner Bridge","other_names":[],"category":"structure","location":{"address":"NW of Shanksville off LR, 55068, Stonycreek Township","address_restricted":false,"city":"Shanksville","county":"Somerset County","state":"PA","lat":40.026049912000076,"lon":-78.92082862799998,"geom_source":"nps_gis"},"listed_date":"1980-12-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"A covered multiple king-post truss bridge over Stony Creek, about 2 miles northwest of Shanksville in Somerset County, Pennsylvania, located adjacent to a B&O Railroad spur. It is listed as part of the Covered Bridges of Somerset County thematic group.","why_significant":"The form describes it as a long multiple king-post truss bridge with a timber covered gable roof, vertical plank siding reaching only halfway up the side walls, and portals with vertical planked inside walls. The bridge is recorded as built in 1881 by Tobias Glessner and is in good condition.","narrative":"Covered bridge over Stony Creek about two miles northwest of Shanksville, Somerset County, Pennsylvania, built in 1881 by Tobias Glessner. It carries a timber road surface on a multiple king-post truss, with an end post length of 90 feet and a width of 12 feet. The roof is a timber gable covering the full span, and its vertical plank siding reaches only halfway up the side walls, while the portals have vertical planked inner walls. The bridge is one of the group of covered bridges in Somerset County that were grouped together for recognition as a thematic set. Its structure, with the king-post truss and sheltering roof, represents the wooden bridge-building methods used in the county in the late nineteenth century. The bridge is recorded as being in good condition, with a load limit of 3 tons and a clearance of 11 feet.","period_of_significance":null,"architect_builder":"Tobias Glessner","architectural_style":null,"criteria":[],"status_note":"Condition recorded as good","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:32.469806-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/80003631.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003631/40568008dd-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003631/40568008dd-1600.webp","licence":"CC BY-SA 3.0","author":"Allen C.","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Glessner_Bridge.JPG\" rel=\"noopener\">Allen C.</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:Glessner_Bridge.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993865","wikipedia":"https://en.wikipedia.org/wiki/Glessner_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5569506"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/somerset-county/glessner-bridge-80003631/"}