A senior manager at Port Authority involved in several high-profile projects was let go Friday, sources say, after her position was eliminated in a reorganization

Wendy Stern, the agency's assistant general manager of planning and development, was involved in supervising a range of Port Authority activities including some day-to-day functions, but also larger projects like Bus Rapid Transit and the effort to get real-time GPS tracking on buses and trains.

Port Authority spokesman Jim Ritchie declined to comment, saying it was a personnel matter.

Sources said Stern's responsibilities would be assigned to other managers.

Stern has been employed by Port Authority since 2009, according to her LinkedIn profile. Her profile says that before working at Port Authority, she was Massachusetts' undersecretary of transportation and deputy chief operating officer for the MBTA, Boston's transit system. She could not be immediately reached for comment.

Stern's position is not subject to board approval; she was directly managed by Ellen McLean who was named CEO, after serving on an interim basis, January 24.