Longfellow Bridge detours to begin mid-July; two Red Line diversions planned for this summer

Red Line train service over the Longfellow Bridge will be suspended August 10-11 and August 24-25.
Red Line train service over the Longfellow Bridge will be suspended August 10-11 and August 24-25.

Get excited: The long-awaited Longfellow Bridge reconstruction project is about to begin.

In case you missed the news a few months ago, the Boston area is in for some major traffic disruptions caused by the planned renovations of the “Salt-and-Pepper-Shaker Bridge” that connects Beacon Hill with Cambridge: three years of traffic snarls, 25 weekends of Red Line diversions, and a long-term hiatus for all northbound car traffic on the bridge.

And it’s all set to start this summer. Joy.

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Mike Verseckes, spokesman for the Massachusetts Department of Transportation, said department staff is now in the process of modifying traffic signals on either end of the bridge to accommodate for the coming jams.

After that, starting as early as July 8, vehicular traffic flowing from Boston to Cambridge will be blocked off, leaving only a single lane that will be designated for cars moving southbound.

The Red Line is scheduled to be diverted around the bridge for two weekends this summer: August 10 to 11 and August 24 to 25. On those days, buses will ferry passengers from Park Street to Kendall/MIT via Charles/MGH.