Traffic Impedements (pics1, pics2). 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 full speed. A car doing these turns may have to yield to a pedestrian in a crosswalk. That defeats the purpose of the full speed turn. At each of the four full speed turns a pedestrian has to be on the lookout for a fast-moving car. Home Interchange Columbus