{"nrhp_refnum":"10000113","name":"Southern Pacific Railroad Bayshore Roundhouse","other_names":[],"category":"building","location":{"address":"Jct. of Industrial Way and Bayshore Ave.","address_restricted":false,"city":"Brisbane","county":"San Mateo County","state":"CA","lat":37.70181168000005,"lon":-122.40678255299997,"geom_source":"nps_gis"},"listed_date":"2010-03-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A semi-circular, one-story brick railroad roundhouse and its concrete turntable pit at the former Southern Pacific Bayshore rail yard in Brisbane, San Mateo County, California. It was completed in 1910.","why_significant":"The nomination argues it is significant under Criterion C as a surviving example of a Southern Pacific brick roundhouse of the steam era. It is described as the only surviving roundhouse built by Southern Pacific in California, and the only surviving roundhouse of any major railroad in the state. It is significant locally or regionally in Transportation and Architecture.","narrative":"Built in 1910 on reclaimed bayshore land in Brisbane, this brick roundhouse once serviced steam locomotives at the Southern Pacific Bayshore rail yard. The building curves through 108 degrees and holds 17 enclosed stalls, numbered 24 to 40. Open-air \"whisker\" stalls, now marked only by wooden lighting poles, were meant to complete the circle. Construction rests on pile-supported concrete foundations, with brick walls, arched windows, cast iron posts and a timber roof frame. It was designed by the railroad's own construction department, and its designers are unknown. The nomination holds that it is the only surviving Southern Pacific roundhouse in California and the only surviving roundhouse of any major railroad in the state. Its period of significance runs from 1910 until 1957, when steam locomotives were last serviced there. A 2001 fire burned about half the roof, and vandalism has broken the windows. The walls remain intact, and the nomination says the building can be restored from surviving materials and records.","period_of_significance":"1910-1957","architect_builder":"Unknown/Southern Pacific Railroad","architectural_style":"Early 20th century/Other: Industrial","criteria":["C"],"status_note":"Vacant and not in use; damaged by vandalism, neglect, weather and a 2001 fire that burned about half the roof. The turntable has been removed and its pit is filled with water and overgrown.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.52598-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/10000113.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/10000113/f91da4d2e4-800.webp","url_1600":"https://nationalhistoricalregister.com/media/10000113/f91da4d2e4-1600.webp","licence":"Public domain","author":"unknown photographers","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bayshore_Highway_and_Cutoff.jpg\" rel=\"noopener\">unknown photographers</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bayshore_Highway_and_Cutoff.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861570","wikipedia":"https://en.wikipedia.org/wiki/Bayshore_Cutoff","wikidata":"https://www.wikidata.org/wiki/Q54933088"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-mateo-county/southern-pacific-railroad-bayshore-roundhouse-10000113/"}