{"nrhp_refnum":"12000512","name":"Riverhead Main Street Historic District","other_names":[],"category":"district","location":{"address":"Roughly E. & W. Main Sts., Griffing, Roanoke, Maple, & Peconic Aves.","address_restricted":false,"city":"Riverhead","county":"Suffolk County","state":"NY","lat":40.92078220850007,"lon":-72.65768574247883,"geom_source":"nps_gis"},"listed_date":"2012-08-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Commerce"],"significance_levels":["local"],"summary":{"what_it_is":"A commercial historic district of about three-tenths of a mile along East and West Main Street and adjoining sections of Griffing, Roanoke, Maple and Peconic Avenues in downtown Riverhead, Suffolk County, New York. It holds 46 contributing and 18 noncontributing buildings dating from the 1840s through the 1960s.","why_significant":"The district is described as a downtown that grew organically over time to serve the East End of Long Island, with buildings from nearly every decade from the 1840s to the 1960s. Riverhead sat at the convergence of the old roads, the Peconic River bridge, the head of navigation for the Peconic Bay system and the railroad. The significance section is cut off in the text, so the stated criteria and period are not available.","narrative":"Riverhead's Main Street district covers roughly three-tenths of a mile of flat, tree-lined downtown on Long Island's East End. It includes 46 contributing buildings along East and West Main Street and nearby stretches of Griffing, Roanoke, Maple and Peconic Avenues. Commercial blocks of two and three stories fill the older western section, while the eastern end holds mid-19th-century churches and houses alongside one- and two-story shops from the 1940s to 1960s. Styles run from Greek Revival and Italianate to Romanesque Revival, Colonial Revival and mid-century modern, unified by scale and the use of wood, brick and stone. The location explains the town's role: Riverhead was the easternmost point where the Peconic River could be bridged, the head of navigation for Peconic Bay, and a meeting point of the region's roads and railroad. Main Street followed the old King's Highway. Many storefronts have been altered, and some stores stand vacant, but several landmark buildings remain largely intact.","period_of_significance":null,"architect_builder":null,"architectural_style":"Mid-century Greek Revival, Late Victorian (Italianate, Second Empire, Queen Anne, Romanesque), Late 19th and Early 20th Century Revivals (Beaux Arts, Colonial and Classical Revival), and Modern","criteria":[],"status_note":"Most buildings are described as in reasonably good to excellent repair, though there are numerous vacant stores, especially in the eastern part of the district, and new businesses such as restaurants are beginning to move in.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:48.461441-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/12000512.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75322214","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/riverhead-main-street-historic-district-12000512/"}