The Iowa State Patrol said a dump truck struck a bridge Thursday morning, backing up traffic on Interstate 35. Subscribe to KCCI on YouTube now for more: http://bit.ly/QY3wuM Get more Des Moines news: http://kcci.com Like us : http://facebook.com/kcci8 Follow us: http://twitter.com/KCCINews Google+: http://plus.google.com/+kcci