High Quality Content by WIKIPEDIA articles! Metro-North Railroad's Danbury Branch is a diesel branch of the New Haven Line from downtown Norwalk, Connecticut north to Danbury. It opened in 1852 as the Danbury and Norwalk Railroad. Metro-North took over operation of the line from Conrail in 1983. The Cannondale Railroad Station, pictured at right, is one of the more scenic stations along the line.