Renovation of the Main Street Bridge over the Great Miami River in downtown Dayton has traffic squeezed to one lane in each direction.The $8.8 million project began in March involves replacing the decking, sidewalks and lighting from the beams up. Bridge decking from the east sidewalk removed, leaving just the beams exposed. The 62 -year-old bridge renovation is an Ohio Department of Transportation project that is expected to take a year to complete. TY GREENLEES / STAFF