DES MOINES, Iowa (AP) – Iowa officials say repairs to roads damaged by Missouri River flooding could be threatened by approaching deadlines built into federal law. Gov. Terry Branstad and Senate Majority Leader Michael Gronstal have sent letters to federal transportation officials asking that they waive requirements that repairs be completed within 180 days of a disaster. That would mean a November deadline for repairs, but the river hasn’t receded enough in many areas to allow damage assessments, much less repairs. In their letters, Branstad and Gronstal are seeking more time to assess damage and fix roads.