The evening commute was snarled Thursday when service on parts of the Green and Orange lines was suspended due to what the MBTA called a “structural issue” with the Government Center Garage.
Shuttle buses replaced Green Line service between the Government Center and Lechmere stations, and Orange Line service was suspended between North Station and Back Bay, the MBTA said in a tweet shortly after 6 p.m.
“Customers can use Green Line service through downtown,” the T said.
The shutdown caught commuters off-guard, with one Twitter user, Alex DiPrato sharing photos of a crowd of people waiting on a platform, near a sign that states “no train service.”
“The MBTA’s usual good service,” DiPrato said. “State Street ‘closed’ while hundreds wait.”
A 51-year-old construction worker died in late March after the Bobcat he was operating fell nine stories in a collapse at the Government Center Garage.
In a statement, National Real Estate Advisors and The HYM Investment Group, which is part of the Government Center Garage redevelopment effort, said the structural issue was not related to the ongoing demolition work.
“This afternoon a team of engineers conducted a survey of the MBTA tunnels underneath the Government Center Garage,” the statement said. “A subsurface column in proximity to the Green and Orange Lines was identified as compromised from years of water damage.
“The condition of this column is unrelated to the demolition work at the Government Center Garage. In an abundance of caution, the MBTA is diverting operations around the Haymarket MBTA Station.”