As expected, the U.S. Secret Service, along with regional transportation officials and the MPD, unveiled their plan yesterday to close all Potomac River bridge crossings on Inauguration Day. The announcement also included the above map, which shows plans to close off almost 3.5 square miles of downtown Washington to vehicular traffic starting at 3 p.m. on January 19 until the morning of January 21. You can download PDFs of both the Law Enforcement and Public Safety Public Affairs Subcommittee Joint Transportation Plan and the Secret Service Security Plan at the D.C. government’s Getting There web site. Both documents contain extensive information on road closures and restrictions throughout the inaugural celebration period. Maryland and Virginia also have special web sites set up with the latest information. Below the jump, you’ll find excerpts from the recent announcements that include lists of road closures and traffic restrictions. Of special note for those of you planning on walking down to the National Mall for the inauguration will be the list of pedestrian access points — you’ll want to pick which way you plan to walk before you set out that morning, or you may find yourself stuck.