Capitol Police will begin restricting access to the “Capitol Square— at 6 p.m. Wednesday in preparation for President Barack Obama’s address to a joint session of Congress.The square encompasses all the House and Senate buildings, roughly stretching from D Street on the north side of the Capitol to C Street on the south side. It also includes the Capitol Reflecting Pool to the east and the Supreme Court to the west. Police spokeswoman Sgt. Kimberly Schneider said that starting at 6 p.m., the area will only be accessible to law enforcement personnel and those “authorized— to be at the joint session. At 6:30 p.m., police will start restricting vehicles from the surrounding streets. Obama is scheduled to begin his address at 8 p.m.According to a Capitol Police press release, the road closures are as follows:North Side of Capitol Square • D Street Northeast between Second Street Northeast and Louisiana Avenue Northwest • C Street Northeast between Second Street Northeast and Louisiana Avenue Northwest • Constitution Avenue between Second Street Northeast and Louisiana Avenue Northwest • Delaware Avenue between Columbus Circle and Constitution Avenue Northeast • New Jersey Avenue Northeast between Louisiana Avenue and D Street Northeast • Pennsylvania Avenue between First Street and Third Street Northwest • East Capitol Street between Second Street and First Street Northeast/Southeast • First Street between Columbus Circle Northeast and C Street Southeast • First Street between Louisiana Avenue Northwest and Washington Avenue SouthwestSouth Side of Capitol Square • Maryland Avenue Southwest between First Street and Third Street Southwest • Independence Avenue between Second Street Southeast and Washington Avenue Southwest • C Street between First Street Southeast and Washington Avenue Southwest • Delaware Avenue between Washington Avenue Southwest and C Street Southwest • New Jersey Avenue between Independence Avenue and D Street Southeast • South Capitol Street between Independence Avenue and D Street Southeast/Southwest