Metro

Reopening of bridges delayed until middle of next week

The schedule was delayed because construction-related activities, such as placing rail and grout, are taking longer than expected, MassDOT said in a statement.
Nicholas Pfosi for The Boston Globe
The schedule was delayed because construction-related activities, such as placing rail and grout, are taking longer than expected, MassDOT said in a statement.

The Boston University and Commonwealth Avenue Bridges will remain closed to drivers and MBTA trollies into the middle of next week because of construction delays, the Massachusetts Department of Transportation said Saturday.

Traffic was supposed to resume on the bridges and a stretch of Commonwealth Avenue on Aug. 14, a department official said. But the schedule was delayed because construction-related activities, such as placing rail and grout, are taking longer than expected, MassDOT said in a statement.

Bad weather has also delayed workers from pouring concrete, MassDOT said.

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“At this time, crews continue placing rail and concrete on areas of the deck,” MassDOT said in its statement. “The concrete will need to cure for at least 24 hours and the rail must be tested prior to service. Other current activities include building sidewalks, curbing, putting in place waterproofing materials, installing final pavement and markings, and carrying out other finishing work.”

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Shuttle buses have replaced Green Line trollies between Babcock and Blandford Street stops, MassDOT said on the project’s website.

Transportation Secretary Stephanie Pollack thanked the public for its cooperation.

“We appreciate the cooperation and understanding of the local community, residents and commuters, area businesses, and civic leaders, and thank them for their patience and efforts to consider travel options during this construction project,” Pollack said.

Adam Sennott can be reached at adam.sennott@globe.com