MBTA General Manager and Interim Transportation Secretary Phil Eng (left) and Highway Administrator and Transportation Undersecretary Jonathan Gulliver speak to reporters at a media availability on Oct. 16, 2025. Ella Adams/SHNS photo

MBTA General Manager Phil Eng has been tapped as the state's interim transportation secretary effective immediately, filling in a role created Thursday by the resignation of Monica Tibbits-Nutt.

The Healey administration announced Thursday morning that Tibbits-Nutt "has made the decision to step down" from her roles as secretary and CEO of the Massachusetts Department of Transportation.

Tibbits-Nutt was appointed as secretary in September 2023 to replace Gov. Maura Healey's first transportation secretary, Gina Fiandaca. Tibbits-Nutt was undersecretary of t

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