{"nrhp_refnum":"96001102","name":"State Highway 5 Bridge at High Creek","other_names":["FM 1509 Bridge at Cane (High) Creek","Lr0045-14-101"],"category":"structure","location":{"address":"FM 1509, 1.8 mi. W of jct. with FM 38","address_restricted":false,"city":"Brookston","county":"Lamar County","state":"TX","lat":33.61212483300005,"lon":-95.74744783099999,"geom_source":"nps_gis"},"listed_date":"1996-10-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A single-span, 50-foot steel Warren pony truss bridge carrying FM 1509 over High (now Cane) Creek near Brookston in southwestern Lamar County, Texas. It was built in 1920-1921 and widened in 1935-1936.","why_significant":"The bridge is argued to be significant under Criterion C in engineering at the state level. It uses the Texas Highway Department T5 standard design with suspended floor beams, and it is one of only two such bridges surviving on the state highway system. Its 1935-1936 widening with a wooden deck is presented as an example of Depression-era economy and materials conservation.","narrative":"This 50-foot steel Warren pony truss bridge carries FM 1509 over High Creek, now called Cane Creek, in southwestern Lamar County, Texas. The Austin Brothers Bridge Company built it in 1920 and 1921 for the Texas Highway Department, using the department's T5 standard design. That design hangs its floor beams below the bottom chords, a method later replaced by braced beams. Only two bridges on the Texas state highway system still use it, this one and another on old State Highway 5 at Big Pine Creek. In 1935 and 1936 the department widened the roadway from 15 to 21 feet and replaced the concrete deck with timber stringers and plank flooring, a choice linked to Depression-era economy. The wooden deck remains today. When US 82 was straightened in the late 1940s, traffic shifted away from the bridge, which probably helped it survive in service. It was listed for its engineering significance at the state level.","period_of_significance":"1920-1921; 1935-1936","architect_builder":"Bridge Designer: Texas Highway Department; Truss Fabricator and Bridge Builder: Austin Brothers Bridge Company of Dallas, Texas","architectural_style":"Other: Warren pony truss bridge","criteria":["C"],"status_note":"Still in vehicular use on FM 1509 with its wooden deck intact; the 1995 sufficiency rating of 36.8 made it eligible for replacement, but no projects were planned.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:23.932311-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/35/9698/40969835/content/electronic-records/rg-079/NPS_TX/96001102.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/40969835","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q110001109"},"indexable":true,"url":"https://nationalhistoricalregister.com/texas/lamar-county/state-highway-5-bridge-at-high-creek-96001102/"}