{"nrhp_refnum":"95000550","name":"Delta Trestle Bridge, Maryland and Pennsylvania Railroad","other_names":[],"category":"structure","location":{"address":"Maryland and Pennsylvania RR tracks over unnamed stream, E of Bunker Hill Rd., Peach Bottom Township","address_restricted":false,"city":"Delta","county":"York County","state":"PA","lat":39.72896048700005,"lon":-76.32990256899996,"geom_source":"nps_gis"},"listed_date":"1995-05-04","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"A wood trestle railroad bridge of about 131 yards in length carrying the former Maryland and Pennsylvania Railroad over a ravine near Bunker Hill Road in Peach Bottom Township, north of Delta Borough, York County, Pennsylvania. It was constructed c. 1875 for the Peach Bottom Railway, the predecessor of the Maryland and Pennsylvania Railroad.","why_significant":"The nomination argues the bridge is the only remaining original structure of the railroad and the only existing trestle bridge in the Pennsylvania portion of the line, representing the trestle design once common on the route. It is also described as the longest bridge of any type on the line and as an example of the bridge designs used on the original Peach Bottom Railway, tied to the railroad's role in linking southern York County merchants and farmers to the Baltimore market.","narrative":"Built around 1875 for the Peach Bottom Railway, a wood trestle bridge spanning about 131 yards carries the line over a ravine north of Delta Borough in York County, Pennsylvania. Its vertical posts, angled supports and diagonal bracing rise to about thirty feet at the center, and the railroad ties rest on steel I-beams held by lengthwise wood beams. The Peach Bottom Railway was formed in 1868 as a middle division line and merged in February 1901 with the Maryland Central Railway to become the Maryland and Pennsylvania Railroad, which gave farmers and merchants of southern York County a route to Baltimore. Engineer S.M. Manifold designed the line's bridges, and contractors John A. Barnett and William Ramsay built them. The bridge is regarded as the only surviving original structure on the line and the only trestle in the Pennsylvania portion. Freight traffic declined after World War II, and the track was abandoned in the 1970s. Some members have decayed or been removed, and the structure needs major repair.","period_of_significance":"C. 1875 - 1942","architect_builder":"S.M. Manifold (engineer); John A. Barnett and William Ramsay (contractors)","architectural_style":null,"criteria":["A","C"],"status_note":"Tracks removed and sold for scrap; trestle remains standing but is in need of extensive repair, with some ties and beams missing; no longer in use.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:37.098721-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/95000550.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/95000550/9192ccf371-800.webp","url_1600":"https://nationalhistoricalregister.com/media/95000550/9192ccf371-1600.webp","licence":"CC BY-SA 4.0","author":"JERRYE &amp; ROY KLOTZ, M.D.","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:DELTA_TRESTLE_BRIDGE,_PEACH_BOTTOM_TOWNSHIP,_YORK_COUNTY,_PA.jpg\" rel=\"noopener\">JERRYE &amp;amp; ROY KLOTZ, M.D.</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:DELTA_TRESTLE_BRIDGE,_PEACH_BOTTOM_TOWNSHIP,_YORK_COUNTY,_PA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994107","wikipedia":"https://en.wikipedia.org/wiki/Delta_Trestle_Bridge,_Maryland_and_Pennsylvania_Railroad","wikidata":"https://www.wikidata.org/wiki/Q5254770"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/york-county/delta-trestle-bridge-maryland-and-pennsylvania-railroad-95000550/"}