Choke Point of a Nation: The High Cost of an Aging River Lock

A symbol of America’s ailing infrastructure, Lock No. 52 on the Ohio River is responsible for a shipping bottleneck that hobbles commerce far and wide.
Read more: http://www.nytimes.com/2016/11/23/business/economy/desperately-plugging-holes-in-an-87-year-old-dam.html?source=Snapzu