Photos are downloadable. Photo Credit: I-69 Finish Line. The bridge connecting South Street with Grand Valley Boulevard also crosses Sartor Ditch. SONY DSC SONY DSC SONY DSC SONY DSC SONY DSC SONY DSC Concrete crews make smaller pours for sidewalks and transition slabs between bridge decks. A crew pours the sidewalk, which will line both sides of the Grand Valley Boulevard overpass. Contractors pour concrete decking for the South Street bridge over Sartor Ditch. A worker smooths recently poured concrete from a working platform. Workers smooth the edges of the South Street bridge deck by hand.