Erstfeld-Biasca high-speed rail (HSR), Switzerland June 1, 2014 | Europe Project Update Developer: AlpTransit Gotthard (ATG) Limited, a subsidiary of Swiss Federal Railways (SBB) Project description: Construction of a 57-km railway line through the twin-tube Gotthard Base Tunnel in S... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password