{"nrhp_refnum":"88000866","name":"Bridge in Cumberland Township","other_names":[],"category":"structure","location":{"address":"LR 01002 over Marsh Creek","address_restricted":false,"city":"Greenmount","county":"Adams County","state":"PA","lat":39.75759304400003,"lon":-77.28482731299994,"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 three-truss highway bridge over Marsh Creek in Cumberland Township, Adams County, Pennsylvania, comprising two pony trusses and one Baltimore truss. It was built in 1894 by Nelson & Buchanon of Chambersburg.","why_significant":"The Baltimore truss is regarded as the primary reason for significance, being one of only three representative examples of this truss type in the nomination and the earliest example of its type among them. The bridge is also described as one of the few metal trusses in south central Pennsylvania, while most exemplary truss bridges in the nomination are in other regions of the state. The area of significance is engineering.","narrative":"Spanning Marsh Creek in Cumberland Township, Adams County, this vehicular bridge was completed in 1894 by Nelson & Buchanon, a Chambersburg firm of engineers and contractors that built bridges throughout Pennsylvania. The structure is 255 feet long overall and carries three spans on three trusses: two pony trusses and one Baltimore truss. The main span measures 160 feet, with two secondary spans of 48 feet each. Its stone abutments and concrete-topped stone wings support steel superstructure, and the form marks the bridge as unaltered. Its significance rests mainly on the Baltimore truss, which is the earliest of the three representative examples of that type in the group nominated with it. It is also one of the few metal trusses in south central Pennsylvania, a region where most exemplary truss bridges in the group are not located. For these reasons it is valued for its engineering.","period_of_significance":"1894","architect_builder":"Nelson & Buchanon (designer/engineer and builder/contractor); Nelson & Buchanon Engrs. & Contrs., Chambersburg, Penna.","architectural_style":null,"criteria":[],"status_note":"Vehicular use, unaltered integrity as marked on the form.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:37.890714-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000866.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000866/c85448bffa-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000866/c85448bffa-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_Cumberland_Township.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_in_Cumberland_Township.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992100","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Cumberland_Township","wikidata":"https://www.wikidata.org/wiki/Q4966346"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/adams-county/bridge-in-cumberland-township-88000866/"}