{"nrhp_refnum":"78003033","name":"Oak Ridge Railroad Overpass","other_names":[],"category":"structure","location":{"address":"SW of Shipman on VA 653","address_restricted":false,"city":"Shipman","county":"Nelson County","state":"VA","lat":37.703222115000074,"lon":-78.87082574699997,"geom_source":"nps_gis"},"listed_date":"1978-04-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A single-span steel Pratt through truss railroad overpass carrying Route 653 over the Southern Railway southwest of Shipman in Nelson County, Virginia, built in 1882 by the Keystone Bridge Company.","why_significant":"The nomination presents it as a good example of a Keystone Bridge Company truss, rated 21.0 out of 27.0 points under a state research council's bridge criteria. Reviewer notes say it is one of only two of its type in Virginia according to HAER. Areas of significance checked are engineering, transportation, commerce, communications and industry.","narrative":"Carrying Route 653 over the Southern Railway southwest of Shipman, this bridge is a single-span Pratt through truss built in 1882 by the Keystone Bridge Company. The truss spans 100 feet, with two 19-foot wooden beam approach spans. Its top chords are upright channels joined by cover plates and lacing bars, while the posts are paired vertical channels. The bottom chords and diagonals use die-forged double rectilinear eye bars. Abutments are rubble stone masonry with concrete facing, and the piers are concrete with wooden bents. A bridge plate bears an open-work 9 flanked by 18 and 82, marking the year of construction. The bridge was surveyed in 1976 as part of a study of metal truss bridges in Virginia and scored 21.0 of a possible 27.0 points on the study's significance criteria. Reviewers described it as a good example of a Keystone Bridge Company truss and noted that it is one of only two in the state according to the Historic American Engineering Record. It remains in excellent, unaltered condition.","period_of_significance":"1882","architect_builder":"Keystone Bridge Company","architectural_style":"Pratt through truss","criteria":[],"status_note":"Condition listed as excellent and unaltered, on its original site; used for transportation.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:58.132423-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/29/6820/41682029/content/electronic-records/rg-079/NPS_VA/78003033.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78003033/bd784dbff5-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78003033/bd784dbff5-1600.webp","licence":"Public domain","author":"Rob Tucher, Photographer","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Oak_Ridge_Bridge,_Spanning_Southern_Railroad_at_VA_State_Route_653,_Oak_Ridge_vicinity_(Nelson_County,_Virginia).jpg\" rel=\"noopener\">Rob Tucher, Photographer</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Oak_Ridge_Bridge,_Spanning_Southern_Railroad_at_VA_State_Route_653,_Oak_Ridge_vicinity_(Nelson_County,_Virginia).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/41682029","wikipedia":"https://en.wikipedia.org/wiki/Oak_Ridge_Railroad_Overpass","wikidata":"https://www.wikidata.org/wiki/Q14712993"},"indexable":true,"url":"https://nationalhistoricalregister.com/virginia/nelson-county/oak-ridge-railroad-overpass-78003033/"}