A new vision for the subway level of the Detroit- Superior Bridge...by Michael Gill...In his "Metaphors of a Magnifico," American poet Wallace Stevens wrote about individual perspectives on the same experience: "Twenty men crossing a bridge/Into a village/Are twenty men crossing twenty bridges/Into twenty villages/Or one man/Crossing a single bridge into a village." Last week, Ingenuity Festival director James Levin took about 30 people across the subway level of the Detroit- Superior Bridge. How you see that iconic bridge — with its lace of white concrete arches reaching 3,112 feet across the Cuyahoga…