Many T riders who rely on the Green Line will have to use other transit options to get around the city for a few weeks this December.

The Massachusetts Bay Transportation Authority is suspending service from North Station to Babcock Street (B branch), Kenmore (C and D branch), and Heath Street (E branch) for 15 days, starting Dec. 8 until Dec. 22.

The planned suspension will allow the MBTA to replace a wooden overhead trough that houses wiring and is original to the tunnel, constructed in the 1880s, the agency said.

The agency also plans to use the closure to perform other improvements, including modernizing signals, inspecting tunnels, and brightening stations, as well as continuing to work on the Green Line Train Protection System, which is meant to prevent head-on collisions between

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