The Northern River Street Historic District is located along River Street (southbound US 4 at that point) north of Federal Street, one block east of the Green Island Bridge, in Troy, New York, United States. It was added to the National Register of Historic Places in 1988, as the Northern River Street District, to distinguish it from Troy's previously existing River Street Historic District, which had been one of five superseded by the Central Troy Historic District to the south two years earlier. Its two acres (8,000 m²) include 13 brick industrial and commercial buildings erected from the mid-19th to early 20th centuries. They were cut off from the rest of downtown due to the construction of the Rensselaer and Saratoga Railroad, and as a result became a production center for the city's major industries, primarily textiles. When those industries declined in the mid-20th century, they were further isolated from the city's center by expansion of Federal Street to provide access to the bridge, and various urban renewal efforts. As a result, they have not seen much redevelopment and remain mostly intact. Geography The district is defined by building addresses: 403-429 River Street on the west side, and 420-430 River Street on the east. The resulting district is irregularly shaped, taking in all of the west side between Federal and Jacob streets but only the northern half on the east side. Buildings The west side is dominated by 409-415 River Street, a four-story six-bay former warehouse that dates to the 1840s, making it the oldest building in the district. The brownstone pilasters on the storefronts attest to the lingering influence of Greek Revival architecture at the time it was built. Nest door, 417-419 River Street is as tall but only three bays wide, built a decade later with similar design. Next to it is 421-423 River Street, the 1885 Cleminshaw Building of the H.C. Curtis Collar Co. At six bays and five stories, it is the largest building in the district. It boasts an ornate pressed metal cornice with a pediment reading "1868 REBUILT 1884". At the north end of this row is 425 River Street, a narrower 1892 five-story building showing later influences, with a corbeled brick cornice and molded pediment. The top floor windows are arched; a brick pilaster comes up from beneath to create a rounded arcade. A decorative brick course as well as molded string runs