Pro-Tra Building to construct tram and bus route in Wroclaw, Poland November 11, 2020 | Europe Company News Pro-Tra Building has secured a PLN81.2 million contract to construct the second phase of a combined tram and bus route in Wrocław. The construction work is expected to be completed within 17 months. ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password