A B E T T E R C I T Y I - 9 0 G R O U N D I N G F E A S I B I L I T Y S T U D Y

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9.22.2015 ABC Allston I-90 At Grade

T A S K F O R C E P R E S E N T A T I O N

A B E T T E R C I T Y

I - 9 0 G R O U N D I N G

F E A S I B I L I T Y

S T U D Y

S E P T E M B E R 1 7 , 2 0 1 5 ,

R e v i s e d S e p t e m b e r 2 2 , 2 0 1 5


Current


O V E R V I E W

• Viable At-Grade Plan

• Define Problem

• Assumptions

• Analysis

• Benefits

• Next Steps


TRACKS OR TRAVEL LANES

Item EXISTING ENF 11/14 ABC

WORCESTER

BRANCH RAIL

1 2 2

GRAND JUNCTION 1 2 2

I-90 Masspike 8 @ 12’ 8 @ 12’ 8 @ 12’

SOLDIER’S FIELD

ROAD

PAUL DUDLEY

White

4 @ 10’-11’ 4 @ 10’-11’ 4 @ 10’

8’ 8’ + 14’ ? 10’


134 Acres


1 Acre < 1 %


1.1 miles < 1 %


Tail


“Throat”


Focus 21


Calibrations 3


Sections 24


Key Line 200’


Opportunity

• ROW: Southerly

• ROW: Northerly

• ENF 11/14

• Riprap: +12’

• Cantilever: +15’

(or something

else)


+12’


TF #3

6 / 1 1 / 1 4


212’


ENF 11/14 200’


Riprap: +12’ 212’


Cantilever: +15’ 227’


Plan


ROW Southerly


Southern ROW


Worcester Branch 31’


Grand Junction 2T 59’


Retain I-90


I-90 EB 1 1 1 . 5 ’


I-90 WB 165’


SFR = -1’


SFR EB 189’


SFR WB 214’


PDW/PP 227’


260’


GJ & I-90 crossing


Existing


Over

Courtesy of Ari Ofsevit


Sloped Fill


EPS


600’ twice


BU Parcel K


No impact to BPY


Viable Plan


• ROW South: no change

• ROW North: 200’+12’+15’

• Retain Transportation

Uses and Potential

• Retain Existing Capacity

• Beyond the Throat

• Improve Development and

Place-making

• Reduce Construction

Impacts and $$$

Summary


Next Steps

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