Jeffrey Gonneville speaks with media Feb. 6 at the Alewife T station as the MBTA’s interim general manager. (Photo: Marc Levy)

The main entrance and lobby at Alewife Station reopened to red line riders at the start of service Monday, the MBTA said. The fifth floor of the station’s parking garage also reopened.

The areas had been closed since a Feb. 4 incident in which a driver at the top of the garage crashed intentionally, sending a 10,000-pound section of concrete wall plummeting onto atrium trusses, causing a rain of glass into the lobby and mezzanine area. Only minor injuries resulted.

The update came as Gov. Maura Healey announced she would appoint Phillip Eng as the next general manager of the Massachusetts Bay Transportation Authority. Eng was president of the Metropolitan Transportation Authority’s Long Island Rail Road and interim president of New York City Transit.

The main entrance at Alewife Station has been closed while crews built a temporary shoring tower to reinforce the station’s roof trusses. This structure allows the MBA to now safely reopen the main entrance and lobby, a spokesperson said. The shoring tower will remain in place until permanent repairs are made

No target date for permanent repairs was provided by the transit agency, which has recently added a focus on ending speed restrictions clogging all four lines – including 107 on the red line as of Monday that affect 26 percent of its track.

Extra T workers are at Alewife on Monday to assist riders, the MBTA said.

The garage at Alewife, which opened in 1985, was last in the news for structural reasons in August 2018: The 2,500-parking-space garage saw 500 spaces cordoned off after a chunk of ceiling concrete fell through the window of a car. No one was hurt.