Weekend Road and Rail: Shutdown of I-66 and Md. 355; Metro single tracking

Normal service set to resume Friday amid ongoing investigation into Blue Line derailment

United adds several new international flights from Dulles

3 Blue Line stations remain closed for derailment investigation

NTSB takes lead in Blue Line derailment investigation; service still stopped in Arlington

Part of Md. 355 in Frederick Co. to close this weekend for drainage pipe repair