The Red Line’s Ashmont branch and Mattapan trolley service will be back in business as planned on Monday, according to Philip Eng, the general manager of the MBTA. Eng told the MBTA’s board of directors on Tuesday that work to replace sections of track, ties ,and other equipment between JFK-UMass and Ashmont station— and also between Ashmont and Mattapan— remained on schedule more than halfway through the 16-day diversion.

“The whole Ashmont surge is currently on schedule and we expect to lift speed restrictions on Monday,” Eng told the board during a presentation on Oct. 24. “I’m pleased to report that the work on the Mattapan line is also on track and on schedule and we plan to restore service on Monday, the 30th, in time for morning train service.”

Train service has been replaced by shuttle buses since Oct. 14.

Eng praised T workers and contractors for the progress that’s been made during “the surge,” saying, “I couldn’t be more proud of the team for the effort that’s going on.”

He showed board members video and photos of the work, which includes new flooring, paint, and other “brightening and cleaning “ improvements inside JFK-UMass station.

“As we progressed, we added some station work,” said Eng. “We’re not only focused on safe, reliable train service.”

The general manager won praise from the board members for the diversion project’s success to date, including effective wayfinding signage and the presence of T employees at shuttle stops to help guide commuters.

“I want to thank the city and the mayor for helping us to implement some on-the-fly fixes,” Eng said. “It is a team effort.”