This privately commissioned bridge in Hillsborough, N.C., is designed to offer a place to sit down or stretch out, have a conversation, and watch the large Japanese koi that swim beneath. Your first sight of the bridge comes as a surprise. The 10 x 32 x 3-foot sculpture was designed by Andy Fleishman, using 3/8-inch reinforcing bars to draw the basic form in the air and then filling in with more rebar and expanded metal.