New York train derailment highlights U.S. infrastructure concerns

When a train jumped the tracks this past week at New York’s Penn Station, the seemingly minor accident led to a cascade of exasperating delays for hundreds of thousands of commuters.
When a flood forced authorities to condemn a one-lane, century-old bridge in rural Ozark, Missouri, it was no less frustrating for the residents and business owners cut off from their shortest route into town.
The two episodes highlight a reality about the U.S. transportation system — it is aging, conges