A crew from the National Transportation Safety Board inspects a section of the Skagit River Bridge, Saturday, May 25, 2013 in Mount Vernon, Wash. The chairman of the National Transporta

 

              A crew from the National Transportation Safety Board inspects a section of the Skagit River Bridge, Saturday, May 25, 2013 in Mount Vernon, Wash. The chairman of the National Transporta
A crew from the National Transportation Safety Board inspects a section of the Skagit River Bridge, Saturday, May 25, 2013 in Mount Vernon, Wash. The chairman of the National Transportation Safety Board said Saturday the bridge collapse in Washington state is a wake-up call for the nation. (AP Photo/The Skagit Valley Herald, Frank Varga)