 The main project involved twin bored tunnels below the Allegheny River to connect a refurbished Gateway Station, which is the current Downtown terminus, to North Side station, located just west of PNC Park and Allegheny station, located just north of Heinz Field.The completed project opened to the public on March 25, 2012.The North Side station serves PNC Park, the Andy Warhol Museum, Allegheny Center and numerous office buildings in the vicinity.