Aurora, In. — Indiana Department of Transportation officials and representatives from RAM Construction have established a schedule for the installation of thin bridge deck overlays at four structures in Jennings, Ripley and Dearborn Counties.RAM Construction tentatively plans to place a 3/8-inch polymeric epoxy overlay in two lifts atop the single-span U.S. Highway 50 bypass bridge over CSX railroad tracks west of North Vernon in Jennings County. Overlay operations will occur north of construction activities for the U.S. 50 roundabout at C.R. 450 West.Overlay the 115-foot bridge deck over CSX tracks—tentatively scheduled to start in late May—is designed to seal the driving surface from weather degradation and extend the structure’s service life. Chips of basalt rock will be mixed with the polymeric epoxy to provide a long-lasting friction course for driver safety. The contract includes any needed repairs.Other structures included in this $335,442 bridge overlay project are:The 3-span S.R. 1 bridge over Salt Fork Creek—located just north of Greendale, 3.35 miles north of U.S. 50 in Dearborn County.The 3-span S.R. 3 structure over Sand Creek—located between North Vernon and Westport, 4.56 miles north of S.R. 7 in Jennings County.The 3-span S.R. 229 bridge over Laughery Creek—located at Ballstown, 4.31 miles north of S.R. 48 in Ripley County.Temporary signals will control single-lane traffic flow during overlay operations at each bridge.