MODERATE CONGESTION; SLOW TRAFFIC; DELAYS EXTEND PAST ROUTE 123, WHERE THE WRECK WAS STILL ON THE LEFT SHOULDER; EARLIER INCIDENT BEFORE THE PRINCE WILLIAM PKWY IS GONE; NORTHBOUND RTE 1 SLOWS FROM OPITZ BLVD PAST THE OCCOQUAN; MINNIEVILLE RD SLOW FROM PRINCE WILLIAM PKWY TO OLD BRIDGE RD;