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Boston T Line Closed After Concrete Falls in Tunnel

Friday, April 6, 2018

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Loose pieces of concrete fell onto the inbound platform of Boston’s World Trade Center Station on Wednesday (April 4), resulting in a brief closure of the Silver Line tunnel so engineers could assess the damage.

Officials from the Massachusetts Bay Transportation Authority said that the loose concrete could be attributed to construction occurring on the nearby Waterside Place apartment complex.

Falling Concrete

At the time of the incident, according to the Boston Globe, MBTA spokesman Joe Pesaturo declined to provide a timeline for the engineering assessment or the tunnel closure, noting that engineers would take the time needed to perform a thorough inspection. Waterside Place developer John Drew said that his company would handle any necessary repairs to the tunnel.

While the timing of the concrete fall remains unclear, Drew’s team met with MBTA officials earlier on Wednesday after noticing that piledriving work had raised the sidewalk outside the World Trade Center Station. Further investigation revealed that the concrete had fallen from an underground support column, which led to the tunnel closure.

“There were no known injuries as a result of this incident,” the MTBA said in a statement.

While the agency has not yet provided further information about the concrete that fell in the Silver Line, Drew noted that the piece was 3 or 4 inches long. “I don’t think it was chunks,” he said.

Service was suspended around 2:15 p.m. on Wednesday, with buses stepping in as an above-ground option. Service was resumed as normal on Thursday (Aprl 5) morning.

Silver Line Tunnel

According to the Boston Globe, the Silver Line tunnel was built during the Big Dig highway project, including the Ted Williams highway tunnel. A woman was killed in 2006 when several slabs of concrete fell from the ceiling of the Williams tunnel, crushing her vehicle. At the time, a review revealed that the wrong adhesive was used to secure the concrete.

The Silver Line will add a new branch to Chelsea over the next few weeks.


Tagged categories: Accidents; concrete; Construction; Infrastructure; NA; North America; Program/Project Management; Tunnel

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