Traffic Impedements. The overpass has two five-lane ramps. Each has four crosswalks giving a total of eight. The bicyclist or pedestrian may have to stop and wait for traffic at each of these. Each ramp has two turns that were designed to be nonstop. A car doing these turns may have to yield to a pedestrian in a crosswalk. That defeats the purpose of the nonstop turn. At each of the four nonstop turns a pedestrian has to be on the lookout for a fast-moving car. Home Interchange Columbus