I feel that the only reason this is so big is the media is trying to drag him down and prevent him from running in 2016 as he was slightly leading Hillary Clinton in the polls before the scandal was uncovered. If he was directly involved then evidence would have been found so far. I still support his stances on major issues and his leadership ability 100%.
Bridgegate did not show anything bad about Governor Chris Christie. It showed that he might be a horrible judge of character. The people involved were people he appointed. So he was responsible for their actions to some degree. The event itself did not show anything good or bad about Governor Christie.