{"nrhp_refnum":"90000411","name":"Baker Bridge","other_names":["Huntingdon County Bridge #14"],"category":"structure","location":{"address":"Twnshp. Rt. 370 over Great Trough Creek, 1 mi. E of Newburg","address_restricted":false,"city":"Newburg","county":"Huntingdon County","state":"PA","lat":40.28633061900007,"lon":-78.12125667199996,"geom_source":"nps_gis"},"listed_date":"1990-03-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A two-span, double-rib, closed spandrel concrete arch bridge carrying an unpaved township road over Great Trough Creek in Todd Township, about one mile east of Newburg in Huntingdon County, Pennsylvania. It was constructed in 1917.","why_significant":"The nomination argues the bridge is significant under Criterion C for engineering as one of fewer than fifteen identified concrete arch bridges built in the region during the 1910s. It is described as a well-preserved example of an early twentieth-century concrete arch bridge in Huntingdon County, retaining integrity of material, design and setting despite some surface spalling.","narrative":"A two-span concrete arch bridge built in 1917 carries a township road over Great Trough Creek in Todd Township, about a mile east of Newburg in Huntingdon County, Pennsylvania. The structure is a 114-foot double-rib, closed spandrel arch with a 17-foot-wide paved deck and metal pipe railings. The road leads toward Rothrock State Forest and remains isolated and rural in character. Its builder is not recorded. The bridge is regarded as a significant engineering resource because it is one of fewer than fifteen identified concrete arch bridges built in the region during the 1910s. It is also considered a well-preserved example of early twentieth-century concrete arch construction in Huntingdon County. Surface spalling from weathering is present, but the bridge keeps its original materials, design and setting. A repair in 1978 did not diminish its integrity.","period_of_significance":"1917-","architect_builder":null,"architectural_style":"Other: concrete arch bridge","criteria":["C"],"status_note":"Most recent repair occurred in 1978, which did not compromise its integrity.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.670983-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/90000411.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/90000411/62c389790b-800.webp","url_1600":"https://nationalhistoricalregister.com/media/90000411/62c389790b-1600.webp","licence":"CC BY-SA 3.0","author":"Generic1139","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Baker_Bridge.jpg\" rel=\"noopener\">Generic1139</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:Baker_Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993021","wikipedia":"https://en.wikipedia.org/wiki/Baker_Bridge","wikidata":"https://www.wikidata.org/wiki/Q4849122"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/huntingdon-county/baker-bridge-90000411/"}