Green Line
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Updated maps of Green Line options

MapThe Green Line study has mapped out ten different alternatives so far for better transportation in Somerville. Take a look through the options, which have been updated for the next Green Line Advisory Committee meeting on November 17. The MBTA’s initial evaluations of the options are also now available.


Since the first batch of options, options 2d, 3, and 4 have been revised, and 1d has been added.
Tier 1 Evaluation and Screening of Alternatives (PDF)
This document contains the MBTA’s initial evaluations of all the options below, including information on the criteria used. According to this draft, the highest-rated options are 1a, 1c, 2b, and 3. If these ratings remain, these options will proceed to Tier 2 and the other options will be eliminated.

Option 1a
High rating in current MBTA evaluation
Green Line extended to Medford, Urban Ring Bus Rapid Transit to Union Square
Option 1a
Option 1b
Green Line extended to Union Square, tunnel under Prospect Hill, continues to Medford
Option 1b
Option 1c
High rating in current MBTA evaluation
Green Line extended in two branches to Union Square and to Medford
Option 1c
Option 1d
Green Line extended to Union Square, new commuter rail stops to Medford
Option 1d
Option 2a
Bus Rapid Transit to Medford, Urban Ring Bus Rapid Transit to Union Square
Option 2a
Option 2b
High rating in current MBTA evaluation
Green Line extended to Union Square, Bus Rapid Transit to Medford
Option 2b
Option 2c
Green Line extended to Washington St, Bus Rapid Transit to Union Square and Medford
Option 2c
Option 2d
Bus Rapid Transit to Union Square, new commuter rail stops to Medford
Option 2d
Option 3
High rating in current MBTA evaluation
Urban Ring Bus Rapid Transit to Union Square, commuter rail “shuttle” to Medford
Option 3
Option 4
No Green Line extension, no Bus Rapid Transit, just more buses
Option 4

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