Three House Democrats have proposed a bill to allow public-private partnerships to improve the aging lock and dam infrastructure along the Mississippi and Illinois rivers. The system is several decades old and there is more than a $60 billion backlog of projects that need to be completed, according to the lawmakers. The P3 approach could help move projects faster and provide more funding. "It isn't appropriate to use gum and Band-Aids to fix this stuff," said Dave Loebsack, D-Iowa, who along with Reps. Cheri Bustos, D-Ill., and Bruce Braley, D-Iowa, introduced the bill. A similar bill has been proposed by Sen. Dick Durbin, D-Ill., in the Senate.