{"nrhp_refnum":"88000877","name":"County Bridge No. 36","other_names":[],"category":"structure","location":{"address":"TR 611 over Jacoby Creek","address_restricted":false,"city":"Portland","county":"Northampton County","state":"PA","lat":40.91857581700003,"lon":-75.09319914899999,"geom_source":"nps_gis"},"listed_date":"1988-06-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A 1907 reinforced concrete arch bridge carrying vehicular traffic over Jacoby Creek in the Borough of Portland, Northampton County, Pennsylvania. Its main arch span is 28 feet within an overall length of 48 feet.","why_significant":"The bridge is presented as a representative early twentieth century concrete arch bridge and is described as the first reinforced concrete bridge in Northampton County. Its short arch and incised ornamentation echo earlier stone bridge construction, while its concrete material points to a newer bridge type, which the nomination argues makes it an early example that retains nineteenth century bridge-building traditions.","narrative":"Portland's bridge over Jacoby Creek is a concrete arch structure completed in 1907 and designed by the county engineer L. A. Francisco. Its main span measures 28 feet, and the overall bridge is 48 feet long. The builder was the Pasco Construction Co. The bridge is notable as the first reinforced concrete bridge in Northampton County, and it remains in vehicular use in the small downtown area of the borough. Its surfaces carry incised lines on the keystone, spandrel walls and continuous parapet, along with a molded belt course and coping. These details copy the form and decoration of earlier stone arches, even though the material itself was new for the period. The bridge is valued as an early concrete example that keeps nineteenth century bridge-building traditions visible in its design, and its engineering interest lies in that combination of old form and new material.","period_of_significance":"1907","architect_builder":"L. A. Francisco (designer/engineer); Pasco Construction Co. (builder/contractor)","architectural_style":null,"criteria":["C"],"status_note":"Described as unaltered and in use for vehicular traffic.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:13:33.101833-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000877.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000877/c379dcfe99-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000877/c379dcfe99-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:County_Bridge_No._36.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:County_Bridge_No._36.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993410","wikipedia":"https://en.wikipedia.org/wiki/County_Bridge_No._36","wikidata":"https://www.wikidata.org/wiki/Q5177632"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/northampton-county/county-bridge-no-36-88000877/"}