Gov. Maura Healey has named MBTA General Manager Philip Eng as the state’s interim transportation secretary, replacing Monica Tibbits-Nutt at the helm of an agency that’s faced steady criticism for its handling of a botched service plaza contract for the Massachusetts Turnpike.

Tibbits-Nutt’s departure became official on Thursday morning. She’ll also step down as the CEO of the state Department of Transportation, but will continue to serve as an adviser until Dec. 31, Healey’s office said in a statement. She plans to return to private industry, the administration said.

Read More: Winning bidder drops out of state highway service plaza deal

Eng, who also will continue to run the T, was set to hold an 11 a.m. news conference to discuss his new role. MassLive will provide coverage of tha

See Full Page