The entire length of the mall -- from the Capitol to the Lincoln Memorial -- will be used for the crowds at Obama's inauguration. Via press release from the Inaugural Committee:
In keeping with its pledge to make the inauguration of President-elect Barack Obama one of the most open and accessible in history, the Presidential Inaugural Committee (PIC) announced today that, for the first time, the entire length of the National Mall will be opened to the public so that more people than ever before will be able to witness the swearing-in of the President from a vantage point in sight of the Capitol.This city is going to be crazy -- in a good way. But, it's going to be gridlocked for days. I can't wait.
The PIC has worked closely with officials from the District of Columbia government, the National Park Service, the Armed Forces Inaugural Committee (AFIC), and the Joint Congressional Committee on Inaugural Ceremonies (JCCIC) to make space at this historic location available to members of the public who are unable to obtain tickets to the swearing-in. Those who come to witness the swearing-in on the Mall will be able to watch and listen to the ceremony on large screens that will be provided by the PIC along the Mall.