 In Maryland, the slowest traffic on the Beltway is going to be on the Interloop. Landover past Largo at Ritchie Marlboro Road. Emergency road repairs, two left lanes blocked on the Interloop. Also Interloop near Georgia Avenue, the remains of a crash confined to the right deceleration lane. And from Upper Marlboro northbound on Route 4, traffic heavy and slow between Ritchie Marlboro Road and Woodyard Road.