Those living in proximity to Eglinton Ave will no doubt feel the pain of downtown residents and business owners at news that in order to build the new Ontario Line it will be necessary to close Queen St between Bay and Victoria Sts for four years. It’s a bit like killing the patient to save him. And of course, that four years is only a guess. It might be five or six years. Such gigantic projects executed in the public good recall the 16-year calamity known as the Boston Big Dig. The re-routed highway project was started in 1991 and finished in 2007. Many Bostonians remain bitter.