RfQs issued for Davenport Diamond Rail Grade Separation Project, Canada August 18, 2017 | North America News Infrastructure Ontario (IO) and Metrolinx have issued a request for qualifications (RfQs) to design, build and finance the Davenport Diamond Rail Grade Separation along the Barrie Rail Corridor. The p... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password