North Hempstead, NY – The Town would like to inform all residents that Northern Boulevard, eastbound, at the Roslyn Viaduct will be closed from 9 a.m. to 12 p.m. on Sunday, November 20. At this time, the Roslyn Fire Department will be conducting a test of fire suppression piping on the viaduct. Residents should be aware of the closure and plan alternative routes as the traffic on Northern Boulevard, local roads and through Roslyn Village may be increased. For more information please call the 311 Call Center.