The High Trestle Bridge. Ever since the grand opening on April 30, 2011 there has been a steady stream of people venturing out to enjoy the scenery. It is ½ mile long, 13-story high Bridge with views reaching 5 miles in both directions. An Iowa artist, David B. Dahlquist, created a vision that weaved in the local coal mining history and regional geology. Steel “cribs” reminiscent of a coal mine shaft framed the bridge and four monolithic towers of “coal and limestone” formed a gateway. Lighting of the towers, cribs and piers became part of the plan as well. 41 steel “frames” over the bridge represent support cribs within an historic coal mine. A must see if you are in Iowa.