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Casey Update: Eastbound Arborway Going Into Final Alignment on Friday; Westbound Arborway Final Alignment by Mid-January

Come Friday at 10 am crews will start the process of shifting the eastbound side of Arborway into its final alignment between South and Washington streets as part of the Casey Arborway project.

A graphic of the Casey Arborway in Jamaica Plain and the final traffic alignment.

And by the middle of January, Massachusetts Department of Transportation (MassDOT) crews expect to begin the process to shift the westbound Arborway, which carries traffic headed towards the Arnold Arboretum, into its final alignment.

Keep in mind that the schedule will be impacted by weather conditions “as well as coordination and accommodations with key stakeholders,” according to a MassDOT press release. There will be signage to guide drivers during the final alignment period.

The following information was provided by MassDOT:

Once the eastbound Arborway is shifted into its final alignment the following changes will go into effect:

  • Eastbound traffic will be discontinued on New Washington Street
  • Eastbound left turns to go from the Arborway to Washington Street northbound (towards the Green Street orange line station) will be prohibited at the intersection of Arborway/Washington Street
  • Drivers seeking to make the left turn described above will:
    • Continue through the intersection;
    • Proceed to the eastern median U-turn;
    • Reverse direction using the median U-turn;
    • Proceed to the intersection of Arborway/Washington Street and turn right onto Washington Street northbound.

Once the westbound Arborway is shifted into its final alignment the following changes will go into effect:

  • Westbound traffic will be discontinued on New Washington Street.
  • Westbound left turns to go from the Arborway to South Street southbound (towards Roslindale) will be prohibited at the intersection of Arborway/South Street.
  • Drivers seeking to make the left turn described above will:
    • Continue through the intersection;
    • Proceed to the western median U-turn;
    • Reverse direction using the median U-turn;
    • Proceed to the intersection of Arborway and South Street and turn right onto South Street southbound.

Work on the permanent bicycle and pedestrian paths will continue throughout the traffic shifts.

Once these changes are in place, all east and westbound left turns at Arborway and South Street and Arborway and Washington Street will be processed by the median U-turns. The only exception will be as follows:

  • MBTA buses will have a dedicated lane to turn left from the Arborway westbound onto Washington Street southbound (towards Hyde Park Avenue) to access the lower busway at Forest Hills Station.
  • All other vehicles will be prohibited from this lane during peak commuting hours. An electric sign mounted on the traffic signal will indicate when this lane is legally available to general traffic.

Click here for more of Jamaica Plain News’ coverage of the Casey Arborway Project.

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