As New Jersey Gov. Chris Christie puts the final touches on his inaugural address to be delivered Tuesday, investigations into the Bridgegate scandal are widening, with nearly two dozen subpoenas issued, several of them to top personnel in Christie's administration.

New Jersey Gov. Chris Christie (Jeff Zelevansky, Getty Images)

Despite the cloud of Bridgegate, the inaugural events should be a happy moment for Christie according to Brigid Harrison, a political science and law professor at Montclair State University.

"He will be surrounded by supporters who have rallied to his defense, and so I think there will be a good game face on.  But the reality is, this is a much different inauguration that we'll be seeing tomorrow than the one Gov. Christie had imagined three weeks ago," Harrison said.

Unlike in his State of the State address, Harrison doesn't think Christie will mention Bridgegate in his inaugural speech set to be delivered at the Trenton War Memorial.

"There's a good chance the governor will use this as an opportunity to try and reinvent himself and get back on message in terms of why the Chris Christie personality and why the New Jersey brand of bipartisanship is right for the entire nation," Harrison said.  "He thinks perhaps if he doesn't mention Bridgegate maybe people will forget it, but I think that's probably a long shot."

With an investigation into the George Washington Bridge lane closures likely to last for the next several months, Harrison said it's possible there may be a number of communications made public that could indicate more people in the Christie administration knew about the plan to close the lanes before the scandal erupted, which would further damage the governor.

"Many in the media are speculating that there's another shoe hanging in the lurch waiting to drop," Harrison said.