WASHINGTON — A power outage has closed one of the entrances to the L’Enfant Plaza Metro stop.

Metro says the 9th and D Street entrance is closed but the other two entrances remain open.

Trains are still running.  It’s unclear what is causing the outage.

PEPCO says water got into an electrical vault.

Pepco and Metro are working on the problem, but they don’t know when it will be fixed.