BNSF Railroad engine 6391 is chugging down the line on probably the most scenic bridges in South Dakota. The Falls Park Rail Bridge is usually accustomed to being part of the background as the falls of the Big Sioux River is the main attraction. This photo was taken in Sioux Falls, South Dakota at Falls Park. The clock tower in the background is the Old Minnehaha County Courthouse that was made entirely of quarried quartzite which was one of the main building materials in Sioux Falls at the time.