{"nrhp_refnum":"80003558","name":"Geiger Covered Bridge","other_names":[],"category":"structure","location":{"address":"SE of Schencksville on T 681, North Whiteland Township","address_restricted":false,"city":"Orefield","county":"Lehigh County","state":"PA","lat":40.64634350600005,"lon":-75.61641120899998,"geom_source":"nps_gis"},"listed_date":"1980-12-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A covered bridge over Jordan Creek in North Whitehall Township, Lehigh County, Pennsylvania, with a burr arch truss, a 112-foot end post length, and a clearance of 10 feet 8 inches. Built in 1860 according to the form.","why_significant":"The nomination presents the bridge as an example of 19th-century wooden bridge technology, and as one of the covered bridges in the Delaware River watershed included in a multiple-property thematic group. Its burr arch truss, stepped portal with square planks, and stone abutments are noted as distinguishing features. Steel reinforcements have been added to strengthen it.","narrative":"Built in 1860 over Jordan Creek in North Whitehall Township, Lehigh County, Geiger's Covered Bridge is a wooden structure with a burr arch truss, which combines an arch with a vertical truss system. It measures 112 feet between end posts, is 16 feet 2 inches wide, and offers 10 feet 8 inches of clearance. Its stone abutments support the timber superstructure, which is sheathed in siding. The portal is an unusual feature, with stepped, square planks framing an entryway that extends at least ten feet before the trussing begins. Steel reinforcements have been added over time to strengthen the span. The bridge is owned by Lehigh County. It is included in a group of historic covered bridges in the Delaware River watershed, and is regarded as a representative example of mid-nineteenth-century wooden bridge construction in the region.","period_of_significance":null,"architect_builder":null,"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 17:11:33.089991-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/80003558.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003558/e7c5740cd3-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003558/e7c5740cd3-1600.webp","licence":"CC BY 2.0","author":"Eric","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Lehigh_County_-_Geiger%27s_Bridge.jpg\" rel=\"noopener\">Eric</a>, <a href=\"https://creativecommons.org/licenses/by/2.0\" rel=\"license noopener\">CC BY 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Lehigh_County_-_Geiger%27s_Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993328","wikipedia":"https://en.wikipedia.org/wiki/Geiger_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5530108"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lehigh-county/geiger-covered-bridge-80003558/"}