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iers F
ield
Rd
Cambridge St
Single point location for I-90 Exit
Single point location for I-90 Entrance
Ch
arles R
iv
er
Framingham/Worcester LineFramingham/Worcester Line
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iers F
ield
Rd
Massachusetts Turnpike (EB)Massachusetts Turnpike (WB)Massachusetts Turnpike (WB)Massachusetts Turnpike (EB)
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iers F
ield
RdSo
ldier
s Fiel
d Rd
Cambridge St Agganis Way
Agganis Way
B
Design Speeds Mainline: 70 mph Ramps: 35 mph
Concept Features
C
D
E
Recreate Back Bay U-turn
Tracks within existing easement
Potential future City of Boston yard location
Interchange geometry is compact and mostly at-grade
To Boston
2 Mainline Tracks to Remain
BRIDGE STRUCTURE
C
h
a
r
l
e
s
R
i
v
e
r
Framingham/Worcester LineFramingham/Worcester Line
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iers F
ield
RdSo
ldier
s Fiel
d Rd
Cambridge St
Cambridge St
Agganis Way
Agganis Way
Lincoln Street impacted by relocated on-ramp
Bridge viaducts required at 3 locations
Potential future City of Boston yard location
Constructability issues
Concept Challenges
DD
Unified railyard with main line
Longer Cambridge Street bridge span required over rampRequires reconstruction of Cambridge/Lincoln street intersection
ED
B
C
BRIDGE STRUCTURE