 Over the river in Maryland, volume and rubbernecking delays, both loops between Oxon Hill and Largo. And traffic jams converge on the remains of a crash, mostly on the median strip near exit 9, Allentown Road, not far from the water tower at Andrews. Outerloop was brought down to two right lanes for a while, though, and that's why outerloop traffic is still so slow. Southbound Baltimore-Washington Parkway, Kenilworth Avenue traffic is jammed through Chevrolet after Route 50.