Shuttle buses to replace trains at night on Orange Line between Wellington and North Station

Orange Line at Wellington Station in Medford.David L. Ryan/Globe Staff/file

Shuttle buses will replace Orange Line trains between Wellington Station and North Station Monday through Thursday nights this week, the MBTA said.

Buses will be used from 8:45 p.m. until service ends for the night, the agency posted on Twitter. The change will last from March 27 to March 30.

The shutdown follows the release of the MBTA’s most recent slow zone data Thursday. Speed restrictions cover 25 percent of the Orange Line, up from 14 percent last month, according to the agency’s dashboard.

Suspending train service will allow crews to perform “trackwork,” the agency said.

“This service change will allow MBTA crews to perform critical tamping work along the track in these areas,” the MBTA said in a previous news release.

Orange Line Reminder: Shuttle buses replace service between Wellington and North Station from 8:45 PM to end of service on Mar 27 - 30 for trackwork. pic.twitter.com/QhJy3YTxGl

— MBTA (@MBTA) March 27, 2023