As the Washington Post reported:
Last week workers started sinking the pilings — 2,133, to be exact — that will support the new pool. The old pool, which dates to the 1920s, was not built on pilings.
Jonathan Ernst / Reuters
Tourists walk past work underway to reconstruct the Lincoln Memorial Reflecting Pool on the National Mall in Washington, May 11. Although originally built in 1922 on swampy ground, crews have taken out the massive 618-by-51 meter pool to drive sturdy wood pilings to provide a better foundation and to install a modern water circulation system when they replace it, at a cost of $30.7 million. Work is scheduled to continue on the famous pool -- well known for such real events as Martin Luther King's "I Have a Dream" speech and such fictional ones as Forrest and Jenny reuniting in the movie Forrest Gump -- until 2012.
Tim Sloan / AFP - Getty Images
Jumbotrons and staging are in place along the reflecting pool a day before Glenn Beck's Restoring Honor rally in front of the Lincoln Memorial on August 27, 2010 on the National Mall in Washington.
The reflecting pool in front of the Lincoln Memorial is being completely overhauled and won't be fully repaired until Spring 2012. NBC's Brian Williams reports.