It’s important for residents to stay informed regarding parking, security check points, transportation etc. details of which are changing on a daily basis.
The DC Council, Mayor’s Office, MPD, Metro, US Secret Service and the Presidential Inaugural Committee have put as much information as possible on several websites that I strongly suggest that you visit for updated information:
US Secret Service Inaugural Page
The District of Columbia's Official Inaugural Website
The Presidential Inaugural Committee
Joint Congressional Committee on Inaugural Ceremonies
Getting There DC
Washington Metropolitan Area Transit Authority