Sound Transit completes tunneling for Northgate Link Extension, awards station contract to Absher September 2, 2016 | North America News JCM Northlink LLC, a joint venture of Jay Dee Contractors, Frank Coluccio Construction Company, and Michels Corporation, has completed tunnelling for the Northgate Link Extension. Work began in 2014 a... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password