Work starts Wednesday on a $700,000 Kentucky Transportation Cabinet project to widen the I-64 westbound off ramp (Exit 172) at Grayson so it can handle more traffic. The project will add an extra lane to the off-ramp to provide two longer left-turn lanes and one right-turn lane onto Carol Malone Boulevard (Ky. 7/1). The extra lane will improve traffic flow by allowing more vehicles to move more quickly through the congested intersection. The added traffic capacity also will help keep vehicles from backing up onto the interstate, according to KYTC. During construction, which is scheduled to start Wednesday, contractors will need to temporarily close the right lane of westbound I-64 approaching Exit 172 and shift all exit ramp traffic into one lane.