{"nrhp_refnum":"04000821","name":"Pier 57","other_names":[],"category":"structure","location":{"address":"Eleventh Ave. at end of W. 15th St.","address_restricted":false,"city":"New York","county":"Manhattan","state":"NY","lat":40.74357848900007,"lon":-74.01071344899998,"geom_source":"nps_gis"},"listed_date":"2004-08-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"Pier 57 is a T-shaped ocean liner pier on the Hudson River at Eleventh Avenue and the end of West 15th Street in Manhattan, built 1950-54 by the engineering firm Madigan-Hyland to a design by civil engineer Emil H. Praeger.","why_significant":"The nomination argues the pier is significant under criterion C for engineering history. Instead of conventional piles, about 90 percent of its dead weight is carried by the buoyancy of three hollow reinforced concrete caissons floated down the Hudson. It drew wide attention in engineering journals and is still regarded as an innovation in underwater foundation design.","narrative":"Pier 57 projects into the Hudson River at the end of West 15th Street in Manhattan. Built between 1950 and 1954 to replace a Grace Line pier destroyed by fire in 1947, it was designed by civil engineer Emil H. Praeger and built by Madigan-Hyland. Its foundation departs from usual pier practice. Three hollow reinforced concrete boxes, cast in a drained clay pit at Haverstraw, were floated down the river and sunk onto a prepared bed of sand and gravel. Their buoyancy carries about 90 percent of the structure's dead weight, which made it the only New York City pier with a basement. Above them stand a steel-frame, metal-clad pier shed and a brick head house. The pier served ocean liners until the late 1960s, then became a bus depot until 2003. It was recognized for engineering significance because the design was widely publicized and remains regarded as an innovation in underwater foundations. The property is now vacant.","period_of_significance":"1950-1954","architect_builder":"Praeger, Emil H.; Madigan-Hyland, Engineers","architectural_style":null,"criteria":["C"],"status_note":"Vacant since 2003, when the Metropolitan Transit Authority bus depot left; plans for adaptive reuse were underway.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:53.363021-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/04000821.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/04000821/23c7dbd25a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/04000821/23c7dbd25a-1600.webp","licence":"CC BY-SA 3.0","author":"Dmadeo","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Pier-57.jpg\" rel=\"noopener\">Dmadeo</a>, <a href=\"http://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:Pier-57.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319825","wikipedia":"https://en.wikipedia.org/wiki/Pier_57","wikidata":"https://www.wikidata.org/wiki/Q7191706"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/manhattan/pier-57-04000821/"}