Buses will replace Red Line trains between Harvard Station and Alewife the weekend of Feb. 23 to 24, according to the MBTA.
As part of the bus diversion, buses will make stops at Harvard, Porter, Davis and Alewife stations, and all buses are accessible for people with disabilities, the transit authority's website says.
Normal service will resume on Feb. 25.
The bus diversions will allow workers to perform track, power and signal work as part of the Red Line Floating Slab Project—part of a nearly $35 million series of improvements to the tunnel, which opened in 1985 and is in need of substantial repairs.
The improvements, with their occasional bus diversions, are expected to be conducted into 2016.
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