This has not been officially communicated by the authorities. Just a dump truck driver positioned in front of the house. Then again, when dealing with Washington Gas or Pepco, no one in the District is really in a position of authority. They answer only to their own bureaucracy.
Perhaps the 900 and 1000 blocks of M Street will be paved with steel plates, like O Street to the north. Perhaps someday the steel plates will be removed and the street itself repaved to smoothness. This Wikipedia page comes to mind.