A 25-foot Coast Guard small boat patrols a safety zone around the Minnesota bridge collapse site. A 25-foot Coast Guard small boat from Sector Upper Mississippi River patrols a safety zone around the Minnesota bridge collapse site in Minneapolis, Minn., on Aug. 3, 2007. The Coast Guard is enforcing a seven-mile closure of the Mississippi River to support local efforts to search for victims and remove debris from the waterway. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 017923-K-RZD58-007.jpg Photo Gallery