News bites: Revolving door

Your morning transportation speed-read:

A California utility company that was blamed by the National Transportation Safety Board for a 2010 pipeline accident has hired one of its former investigators.

Eleven percent of the nation's bridges are structurally deficient, according to a new study.

The NAACP has sued the Philadelphia airport over an ad the airport would not allow.

An extension of Washington's Metro to Dulles International Airport could be $150 million over budget.