The US$2.5bn megaproject involves a 7.5-mile corridor beginning in Maryland and connecting to Virginia by a bridge over the Potomac River. It consists of replacing the original 5, 900 foot long span that opened in 1961, rebuilding nearly 12 percent of the Capital Beltway, and reconstructing four interchanges for easier entry and exit from the highway.
Construction of the Woodrow Wilson Bridge project began in 1999 and is now more than 80 percent complete, with the last interchange scheduled to be upgraded by 2013.