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Community Path Meeting

Advanced Conceptual Design Lowell Street to Inner Belt Road

City of Somerville Somerville, MA

December 11, 2012 6:00 PM – 8:00 PM

Green Line Extension Project

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To Talk About GLX Design of the Community Path

• Update on multi-use community path

– Last community path related meeting September 2011

• Q&A at end of presentation

Why Are We Here Tonight?

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Somerville Community Path Co

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Somerville Community Path Extension

(Green Line Extension Design)

Cedar Street to Lowell Street Community

Path Extension (By City of Somerville)

Scope Terminus Proposed Commuter

Rail Alignment

Existing Minuteman Bike Path

Proposed Green Line Extension Rail Alignment

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Somerville Community Path

• Background • Extending current Minute Man

Bike Path towards Cambridge/Boston • Cedar Street to Lowell Street

out to bid Fall 2012 • Green Line Extension project will complete the

engineering to 100% design for the path from Lowell Street to Inner Belt Road

• Location/configuration is dependent upon final location of walls and corridor elements

• Future Connections from Inner Belt Road to Cambridge/Boston has not been precluded and is not within the current scope

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Somerville Community Path • Design Criteria Multi- Use Path consistent with path from Cedar to Lowell Streets ADA Accessible Design Speed: 20 mph for bicycles;

30 mph for steep downgrades (> 4%) Pavement width: 12 foot (preferred)

8 feet minimum (at pinch points) Pavement: Bituminous Concrete (thickness to support

maintenance vehicles) Cross slope: < 2% Grades: 5% maximum (4.5% design) Shoulders: 2 feet each side (preferred) (grass or non-paved

material) Drainage: Pitching pavement to grass shoulders along path

or an inlet and conveyance pipe system Clearance overhead: Minimum 8 feet, 10-12 foot preferred

#6

Somerville Community Path

• Community Path Amenities: • Fencing – locations to be determined • Lighting • Wireless Alarm Call Boxes • Bollards (removable and permanent)

Amenities under consideration where possible : • Trash Receptacles • Landscaping • Benches

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Standard Community Path Section

* CPX FENCE LOCATIONS

TO BE DETERMINED

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Preferred City of Somerville Community Path Section


TO BE DETERMINED

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Typical Section with Community Path

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Central Street

Community Path Lowell Street to Sycamore Street

LOWELL STREET CENTRAL STREET

SYCAMORE STREET

SOMERVILLE JUNCTION PARK

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Lowell Street Station

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Community Path behind the VNA

SECTION MB-EB 298+00


TO BE DETERMINED

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Community Path West of Central Street at Somerville Junction Park

TRACKWAY SECTION MB-EB 294+00


TO BE DETERMINED

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Community Path West of Central Street at Somerville Junction Park at Parking Lot


PARKING LOT


TO BE DETERMINED

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Community Path at the Central Street Bridge Roadway Crossing

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Community Path at the Sycamore Street Bridge Roadway Crossing

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Central Street

Community Path Sycamore Street to Walnut Street

SCHOOL STREET SYCAMORE STREET WALNUT

STREET

MEDFORD STREET

SOMERVILLE CIVIC CENTER

GILMAN SQUARE STATION

#18

Gilman Square Station Emergency Egress to Community Path West of School Street


TO BE DETERMINED

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Community Path at the School Street Bridge Roadway Crossing

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Gilman Square Station

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Community Path from School Street at MBTA Traction Power Substation at Gilman Square Station


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Community Path Mainline from School Street with Spur Connection to Medford Street


TO BE DETERMINED

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Community Path at Medford Street

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Community Path at the Medford Street Underpass Green Line Catenary Pole Connection


TO BE DETERMINED

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Approach to Medford Street Bridge From Walnut Street


TO BE DETERMINED

#26

Community Path East of the Medford Street Bridge From Walnut Street



TO BE DETERMINED

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Central Street

Community Path Walnut Street to Washington Street

McGRATH HIGHWAY

CROSS STREET

MEDFORD STREET

HIGHLAND AVENUE

WASHINGTON STREET

McGRATH HIGHWAY

CHESTER AVENUE

WALNUT STREET

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Walnut Street Bridge Community Path Roadway Crossing


TO BE DETERMINED

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Approach to McGrath Highway Bridge From Walnut Street


TO BE DETERMINED

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McGrath Highway Bridge Community Path Underpass


TO BE DETERMINED

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Community Path Tiered Path at Chester Avenue between Cross Street and McGrath Highway

CHESTER AVENUE

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Chester Avenue – Community Path Connection to McGrath Highway and Cross Street


TO BE DETERMINED

#33 Cross St.

Cross Street Bridge Community Path Underpass

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Community Path with Noise Barrier East of Cross Street Bridge


TO BE DETERMINED

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Community Path West of the Washington Street Bridge At Grade with Green Line Tracks

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Community Path Washington Street to Inner Belt Road

WASHINGTON STREET

JOY STREET INNER BELT ROAD

WASHINGTON STREET STATION

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Washington Street Bridge Community Path Crossing

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Washington Street Station

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Washington Street Station Emergency Egress and Community Path Tunnel

TRACK SECTION MB-EB 235+75

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Washington Street Station Emergency Egress and Community Path Tunnel


#41

Washington Street Station Emergency Egress / Community Path - Switchback Ramp

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Washington Street Station Emergency Egress and Community Path ‘Boat Section’


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Washington Street Station Emergency Egress and Community Path Tunnel under GLX Tracks


#44

Washington Street Station Alternative: Pedestrian Bridge

EMERGENCY EGRESS PEDESTRIAN BRIDGE CONCEPTUAL LAYOUT - FURTHER DESIGN COORDINATION REQUIRED

#45

Green Line Extension Project

Questions ?

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