{"nrhp_refnum":"88000765","name":"Bridge in Heidelberg Township","other_names":[],"category":"structure","location":{"address":"LR 39110 over branch of Jordan Creek","address_restricted":false,"city":"Germansville","county":"Lehigh County","state":"PA","lat":40.70080451500007,"lon":-75.70983251499996,"geom_source":"nps_gis"},"listed_date":"1988-06-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A single span stone arch bridge built of coursed rubble that carries vehicular traffic over Jordan Creek in Heidelberg Township, Lehigh County, Pennsylvania. The form gives its construction date as about 1887.","why_significant":"The nomination describes the bridge as a typical small nineteenth century single span stone arch bridge with very good integrity. It is the only nominated representative of the small single span stone bridges that have carried horse and automobile traffic over the many streams in Lehigh County. Two other stone bridges in the county are included in the same nomination, all built in the last quarter of the nineteenth century. Significance is listed under engineering and transportation.","narrative":"A single span stone arch bridge of coursed rubble masonry carries vehicular traffic over Jordan Creek in Heidelberg Township, Lehigh County. Built about 1887, it has a main span of 32 feet and a overall length of 94 feet, with a semi-circular masonry arch and an open spandrel form. The bridge is one of three stone bridges in Lehigh County nominated together, all built in the last quarter of the nineteenth century. Its builder and designer are not identified in the record. The bridge is considered a typical example of the small stone arch structures that once carried horse and automobile traffic across the many streams of Lehigh County. It retains very good integrity, with the exception of underpinning added at some later point. Its significance rests on engineering and transportation history, as it is the single representative of this bridge type included in the nomination. The nominated area is less than one acre and includes only the superstructure and substructure.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.431012-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000765.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000765/14d510fde3-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000765/14d510fde3-1600.webp","licence":"CC BY-SA 3.0","author":"Hshuvaeva","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_Heidelberg_Township,_PA_01.JPG\" rel=\"noopener\">Hshuvaeva</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:Bridge_in_Heidelberg_Township,_PA_01.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993336","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Heidelberg_Township","wikidata":"https://www.wikidata.org/wiki/Q4966360"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lehigh-county/bridge-in-heidelberg-township-88000765/"}