New Jersey Gov. Chris Christie's former deputy chief of staff says she told him about plans for a traffic study on the George Washington Bridge a month before they began in 2013.

Bridget Kelly is testifying Friday in her own defense while on trial on charges that she helped plot bridge lane closings for political revenge against a Democratic mayor who wouldn't endorse the Republican governor.

She said she told Christie about a traffic study but did not testify that she told him it was actually to get back at the Fort Lee mayor as prosecutors allege.

Kelly is on trial along with another former Christie ally whom prosecutors say launched the bridge closings as revenge against a mayor who wouldn't endorse Christie.... Read More: Nesworks