As the U.S. grapples with a growing list of transportation infrastructure needs and limited public funds, more states are looking to public-private partnerships as a means of fixing and replacing aging bridges, tunnels and roads. These public-private partnerships (P3s) allow private-sector money or know-how to help build infrastructure often at a faster pace and lower cost. But is there a down side for taxpayers? One of the largest examples of a P3 venture is the new $2 billion Midtown Tunnel connecting Portsmouth and Norfolk, Virginia, due to open later this year. On Saturday, NewsHour Weekend's Christopher Booker reports.