District officials Tuesday broke ground on the $20 million renovation of the Navy Yard Metrorail station, a project that has the full backing of the new D.C. administration despite uncertainty about who ultimately willpay for it.

The Green Line station will be the transit hub for the new Washington Nationals’ ballpark, the Southeast Federal Center, the U.S. Department of Transportation headquarters and new residential and commercial development — all going up simultaneously near South Capitol Street Southeast. It will be retrofitted to hold 15,000 passengers, 10,000 more than its current capacity.