{"nrhp_refnum":"04000401","name":"Bethlehem Steel Lehigh Plant Mill #2 Annex","other_names":["Merchant Mill #2","Johnson Machinery Corp."],"category":"building","location":{"address":"11 W. 2nd St.","address_restricted":false,"city":"Bethlehem","county":"Northampton County","state":"PA","lat":40.61529807200003,"lon":-75.37909734099998,"geom_source":"nps_gis"},"listed_date":"2004-05-05","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A large two-story, six-bay brick industrial building at 11 West 2nd Street in south Bethlehem, Northampton County, Pennsylvania, built in 1940 by Bethlehem Steel as a surface preparation and finishing mill for the Alloy and Tool Steel Division of the Lehigh Plant.","why_significant":"The nomination argues the building is significant for its role in the consolidation and expansion of the Alloy and Tool Steel Division between 1935 and 1940, described as the last surviving significant building of that expansion. It is also presented as a representative mid-twentieth-century industrial building type within Bethlehem Steel's development, with its large steel windows, sawtooth monitor roof and crane systems.","narrative":"Built in 1940 by the Bethlehem Steel Corporation at the corner of West 2nd Street and Union Station Plaza in south Bethlehem, this square, two-story brick industrial building covers nearly an entire city block. It was constructed in two sections, with the eastern bays completed in early 1940 and the western bays later that year after a Lehigh Valley Railroad freight house on the site was demolished. It served as a surface preparation and finishing mill for the Alloy and Tool Steel Division, which had been consolidated at the western edge of the Lehigh Plant. Its interior holds an open manufacturing floor, a steel skeleton and overhead cranes, while its exterior is marked by long banks of industrial steel windows and six rooftop sawtooth monitors. The building is significant for its part in the division's expansion in the late 1930s and as a representative mid-twentieth-century industrial building of Bethlehem Steel, whose in-house engineers designed it from standard stock plans. Its period of significance runs from 1940 to 1953.","period_of_significance":"1940-1953","architect_builder":"Bethlehem Steel Corporation","architectural_style":null,"criteria":["A","C"],"status_note":"The building continued in use as a Bethlehem Steel facility until 1986; the bottom-corner Bethlehem Steel logo has since been removed.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.256472-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/04000401.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/04000401/62192c7326-800.webp","url_1600":"https://nationalhistoricalregister.com/media/04000401/62192c7326-1600.webp","licence":"Public domain","author":"Pubdog","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bethlehem_Steel_Lehigh_Plant_Mill_No._2_Annex_Oct_11.JPG\" rel=\"noopener\">Pubdog</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bethlehem_Steel_Lehigh_Plant_Mill_No._2_Annex_Oct_11.JPG"},"district":{"nrhp_refnum":"72001131","name":"Central Bethlehem Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/central-bethlehem-historic-district-72001131/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994668","wikipedia":"https://en.wikipedia.org/wiki/Bethlehem_Steel_Lehigh_Plant_Mill_No._2_Annex","wikidata":"https://www.wikidata.org/wiki/Q4898068"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/northampton-county/bethlehem-steel-lehigh-plant-mill-2-annex-04000401/"}