Road Across Lake Shelbyville Dam Closed to All Traffic News Progress Posted on July 14, 2014 by webmasterJuly 14, 2014 July 14, 2014 The U.S. Army Corps of Engineers will close the road across the main dam at Lake Shelbyville to all vehicle and pedestrian traffic on Monday, July 14 until Friday, July 18. Login or Subscribe to read the rest of this story.