Christie has denied any involvement and was not charged. But the scandal tarnished his national profile and resulted in record-low approval ratings in his home state.
The Office of the Bergen County Prosecutor said in a letter to a local judge it did not have sufficient evidence to prove allegations that Christie knew about a plot to close lanes at the George Washington Bridge in 2013.
The New Jersey governor may never be formally indicted, but his reputation is now on trial.
The New Jersey governor has not been charged, and he has denied having advance knowledge of the alleged plot.
David Wildstein pleaded guilty to conspiracy to commit fraud and conspiracy against rights in New Jersey.
What did the New Jersey governor and the Facebook founder need to talk about?
A report commissioned by Christie will say the embattled New Jersey governor did nothing wrong