Green Street Pedestrian and Bicycle Bridge Jigsaw Puzzle Green Street Pedestrian and Bicycle Bridge Each of the four arches supporting the Green Street Pedestrian and Bicycle Bridge in Winston-Salem, N.C., contributes in a unique way to the overall primary load path. The 32-ft-tall inner arches, which incline 13° outward from a vertical plane, primarily carry the bridge’s dead load. The 16-ft-tall outer arches, which incline 30° outward, support pedestrian live loading as well as a small portion of the dead load.