The state is rebuilding a portion of I-270 at State Route 23 on the north side to reduce congestion and improve safety for drivers in a fast-growing section of Central Ohio.The Ohio Department of Transportation says the project involves two new express lanes from 270 to northbound 23 heading into Delaware County. The lanes will go beneath 23 and reemerge north of the Franklin County line, bypassing traffic lights. The project had been delayed until 2022 because of ODOT's budget problems, but agency director Jerry Wray says work on this and other projects will begin next summer thanks to 65 million dollars in federal money that went unspent by other states. Wray says the project will improve safety for drivers entering I-270 in lanes where others are trying to move over for exits. Wray says the work will take two and a half years to complete.