Several media outlets have published online map resources for the Inauguration of Barack Obama:
The Wall Street Journal has posted a mashup of the location of inauguration events, balls, and attractions in addition to the inauguration parade route (thanks to the Google Maps & Earth blog for pointing this out.)
The New York Times has a nicely done perspective view map that includes 3D building models set as a time sequence of events starting with the procession to the swearing in ceremony at the Capitol and completing the view along the parade route.
USA Today has done a very thorough job with their map of including 3D building information, 360 IPIX imagery, and the locations of first aid, video screen locations throughout the Mall area, and security.
The BBC has a static set of maps and aerial photos of Washington but it does have the location of the restricted streets and closed roads for the city center set up due to the parade.
And, as reported in All Points Blog, CNN, GeoEye and Microsoft are teaming to provide a Microsoft Photosynth image of the inauguration.