{"nrhp_refnum":"88002424","name":"US Post Office-Riverhead","other_names":["Riverhead Post Office"],"category":"building","location":{"address":"23 W. Second St.","address_restricted":false,"city":"Riverhead","county":"Suffolk County","state":"NY","lat":40.91836890800005,"lon":-72.66350207799996,"geom_source":"nps_gis"},"listed_date":"1989-05-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A one-story, five-bay brick post office at 23 West Second Street in Riverhead, Suffolk County, New York, built in 1935 to a design from the Office of the Supervising Architect under Louis A. Simon.","why_significant":"The nomination argues it is an intact, representative example of federal architecture built as part of Great Depression public works programs. Its simplified Colonial Revival design reflects the standardized post office designs of the 1930s. It is also unusual among similar post offices because all three central bays hold entrances rather than an entrance flanked by windows.","narrative":"Built in 1935 at 23 West Second Street, the Riverhead Post Office is a one-story, five-bay brick building on a steel frame, with a limestone watertable, flat roof and brick parapet. Its main facade centers on three recessed arched doorways with molded wood archivolts and fanlights, flanked by original wrought-iron lanterns, with brick quoins at the corners. Inside, the L-shaped lobby keeps its terrazzo floor, quarry tile wainscot, plaster cornice and original pendant lamps. The building was authorized by Congress in 1931 under a Public Buildings Act amendment meant to ease Depression unemployment. Graves-Quinn Corporation completed it in December 1935 for about $75,000. Its design came from the office of Supervising Architect Louis A. Simon, whose standardized Colonial Revival plans shaped many 1930s post offices in New York State. Riverhead's version is unusual because all three central bays serve as entrances. It was recognized as an intact example of that federal building program.","period_of_significance":"1935","architect_builder":"Louis A. Simon, Supervising Architect; Graves-Quinn Corporation of New York City (construction contractor)","architectural_style":"Colonial Revival (modestly scaled, simplified version)","criteria":[],"status_note":"Occupied and in good condition; the form says it retains a high degree of integrity inside and out, and the postal service uses it.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:45.731304-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/88002424.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88002424/da0cabb953-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88002424/da0cabb953-1600.webp","licence":"CC BY-SA 3.0","author":"Americasroof","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Riverhead-post-office.jpg\" rel=\"noopener\">Americasroof</a>, <a href=\"https://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:Riverhead-post-office.jpg"},"district":{"nrhp_refnum":"100001491","name":"Second and Ostrander Historic District","url":"https://nationalhistoricalregister.com/districts/new-york/second-and-ostrander-historic-district-100001491/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75314971","wikipedia":"https://en.wikipedia.org/wiki/United_States_Post_Office_(Riverhead,_New_York)","wikidata":"https://www.wikidata.org/wiki/Q7891039"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/us-post-office-riverhead-88002424/"}