{"nrhp_refnum":"04001290","name":"State Highway 19 Bridge at Trinity River","other_names":["Css 0109-08-023"],"category":"structure","location":{"address":"TX 19, on the Trinity/Walker county line","address_restricted":false,"city":"Riverside","county":"Walker County","state":"TX","lat":30.867427821000035,"lon":-95.39480147599994,"geom_source":"nps_gis"},"listed_date":"2004-12-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A steel Parker through-truss highway bridge carrying State Highway 19 over the Trinity River on the Walker/Trinity county line near Riverside, Texas, built in 1939-40 by the Texas Highway Department with P&B Construction as contractor.","why_significant":"The bridge embodies the defining characteristics of a Texas Highway Department Parker through-truss bridge and is nominated under Criterion C in engineering at the state level. It is one of only three Parker through-truss bridges in Texas with 250-foot spans, and its approach spans are exceptionally long. It has had no major alterations and retains a high degree of integrity.","narrative":"Carrying State Highway 19 across the Trinity River between Walker and Trinity counties, this 2,884-foot bridge was built in 1939-40 to replace a narrow 1912 wooden truss bridge. Texas Highway Department engineers designed it, and P&B Construction built it as a joint project with federal and county partners. It has three Parker through-truss spans, two of 250 feet and one of 150 feet, plus 51 steel I-beam approach spans with a decorative metal picket railing. Only three Texas bridges have 250-foot Parker truss spans, and its approaches run far longer than those on the state's other surviving Parker truss bridges. It was bypassed by a four-lane bridge in 2003 but remains open as an alternate crossing after repair and repainting. Its listing recognizes it as an intact example of Texas highway engineering, with no major alterations.","period_of_significance":"1940","architect_builder":"Bridge designer: Texas Highway Department; Bridge builder: P & B Construction","architectural_style":"Parker through-truss bridge, Steel I-beam bridge","criteria":["C"],"status_note":"Bypassed in 2003 by a new four-lane bridge to the south but remains open as an alternate crossing; repaired and repainted in 2002-2003.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:23.920321-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/87/9705/40970587/content/electronic-records/rg-079/NPS_TX/04001290.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/04001290/cb36d78660-800.webp","url_1600":"https://nationalhistoricalregister.com/media/04001290/cb36d78660-1600.webp","licence":"CC BY 2.0","author":"Patrick Feller from Humble, Texas, USA","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:State_Highway_19_Bridge,_Walker_County,_Texas.jpg\" rel=\"noopener\">Patrick Feller from Humble, Texas, USA</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:State_Highway_19_Bridge,_Walker_County,_Texas.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/40970587","wikipedia":"https://en.wikipedia.org/wiki/State_Highway_19_Bridge_at_Trinity_River","wikidata":"https://www.wikidata.org/wiki/Q55315825"},"indexable":true,"url":"https://nationalhistoricalregister.com/texas/walker-county/state-highway-19-bridge-at-trinity-river-04001290/"}