Porr and Strabag secure tunnelling contract for Vienna U-Bahn Line U2, Austria January 1, 2021 | Europe Company News A consortium of Porr and Strabag has secured a EUR500 million contract from Wiener Linien, the public transport provider in Vienna, to construct a seven-km-long tunnel and four stations as part of the... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password