The mayor’s plan to open Portage and Main is raising concerns about what will happen to an iconic piece of art in the underground concourse. The art piece is a concrete installation that wraps around the entire core of the concourse. It was created by late Winnipeg artist Bruce Head and has a circumference of more than 400 feet – making it the largest concrete work by an artist in Canada. The issue is that moving the art may be impossible, which has left Head’s family worried that they may never see it again if the concourse is closed. “It…