A Lisbon man who was injured Tuesday in a crash on Route 302 in Littleton has died. Loriston Shumway, 43, was traveling east on the highway when Manuel Aguilera, 23, of Lower Waterford, Vermont, crossed the center line and struck him, police said. Shumway suffered life-threatening injuries and was flown to Dartmouth-Hitchcock Medical Center after the crash. He was pronounced dead early Thursday morning, police said. Investigators believe that Aguilera might have been impaired. The crash is under investigation.