ACCIDENT; CLOSED UNTIL SUN APR 15 AT 7 PM DUE TO THE IMF   WORLD BANK MEETINGS: 18TH, 19TH AND 20TH ST NW BETWEEN PENNSYLVANIA AVE AND G ST NW; G ST NW BETWEEN 17TH AND 20TH ST NW; H ST NW BETWEEN 18TH AND 21ST ST NW.