Ключевые слова: activity, bicycle, bicycling, bike, biking, bridge, concrete, country, des moines river, exercise, footbridge, frames, fun, helmet, high, hike, hiking, iowa, landscape, leisure, long, metal, outdoors, park, pedestrian, people, rail trail, recreation, rural, scenic, sport, steel, summer, summertime, tourism, trail, travel, trestle, walk, walking,