This weekend, Sept. 16 – 17, Metro will close four stations on the Red Line to perform track work in the interlocking, where the two tracks intersect and is critical to maintaining safe reliable service. To accommodate this work the Shady Grove, Rockville, Twinbrook, and North Bethesda stations will be closed, with free shuttle buses replacing trains.
Normal Red Line service will operate between Glenmont and Grosvenor, every eight minutes during the day, and every 10 minutes after 9 p.m. During the weekend, Metro will replace the switches in the interlocking outside the Twinbrook Station. The switches and equipment in the interlocking are part of the signaling system embedded on the tracks to ensure trains are routed properly and can safely cross over from one track to the other in the event of a service disruption or single tracking.