MEPA Consultation Meeting
River Street and Western Avenue
Bridge Rehabilitation Project
Wednesday, April 10th, 2013
5:30 PM
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Agenda
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Introduction and MEPA Overview
Project Location and Existing Conditions
Project Purpose and Goals
Alternatives Analysis
Proposed Rehabilitation Concepts and
Improvements
• Resource Impacts and Mitigation
• Question & Answer
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Public Comment
Comments on the proposed project must be
submitted in writing by April 16, 2013, via email
or fax to:
1. Secretary Richard Sullivan
Executive Office of Energy and Environmental Affairs
Attn: Deirdre Buckley, EEA No. 15029
100 Cambridge Street, Suite 900
Boston, MA 02114
2. Email comments to: Deirdre.Buckley@state.ma.us
3. Fax#: (617) 626-1181
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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MEPA Process Overview
• MEPA requires state agencies study the
environmental consequences of their actions,
including permitting and financial assistance.
• Requires all feasible measures to avoid, minimize,
and mitigate damage to the environment
• Requires that state agencies minimize damage to
the environment by studying alternatives to the
proposed project
• MEPA review is not a permitting process. MEPA
requires public study, disclosure, and
development of feasible mitigation
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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MEPA Process Overview Continued
• Review Thresholds Categories (301 CMR 11.03):
• Land, Rare Species, Wetlands, Water,
Wastewater, Transportation, Energy, Air,
Solid/Hazardous Waste,
Historical/Archaeological Resources
• MassDOT projects typically exceed thresholds
associated with Land, Wetlands and
Transportation
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Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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MEPA Applicability
• The project is being both funded and permitted by
state agencies
• MEPA jurisdiction is broad in scope (not limited to
one area of environmental impact)
• ENF required due to impacts to Wetlands,
Waterways, and Tidelands, 301 CMR 11.03 (3)(b)
– Provided that a permit is required:
• (b) Alteration of 500 or more linear feet of bank along a fish
run or inland bank;
• (f) Alteration of ½ or more acres of any other wetlands (for
this project: BLSF, RFA, LUW)
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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MEPA Process Schedule
• ENF Filed with MEPA: 3/15/2013
• Environmental Monitor Notice: 3/20/2013
• Consultation: 4/10/2013 (today’s meeting)
• Comments Due: 4/16/2013
• Secretary’s Certificate Issued: 4/26/2013
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Project Location
Anderson
Memorial Bridge
Western Avenue
Bridges
Craigie
Drawbridge and
Dam Bridge
River Street
Bridges
Longfellow
Bridge
B. U. Bridge
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
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River Street and Western Avenue
Bridge Rehabilitation
Project Purpose
To rehabilitate the River Street and Western
Avenue Bridges to continue to efficiently and
safely meet the needs of the traveling public,
while maintaining their structural integrity,
preserving their historic nature, and improving
the needs of all users including motorists,
cyclists, pedestrians, and recreational boaters.
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Proposed Rehabilitation Concept
Design Goals and Parameters
• Design Goals
– Structural
• Maintain Historic Appearance, while upgrading bridge features to
current codes and standards
• Repair Parapets, Spandrel Walls, and the Arches
– Final Condition Multi-Use Facilities
• Three Vehicular Traffic Lanes
• Improve non-motorized user facilities
– Construction Conditions
• Maintain two Vehicular Traffic Lanes
• Maintain Pedestrian and Bicycle access to the bridge
• Maintain two unobstructed navigation channels, coordinated
between both arch bridges, through the arches at all times
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Bridge Rehabilitation Project
MEPA Consultation Meeting
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River Street Bridges
CAMBRIDGE
NORTH
BOSTON
CHARLES RIVER
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Western Avenue Bridges
BOSTON
CAMBRIDGE
NORTH
CHARLES RIVER
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Existing Conditions
Arch Bridges over Charles River
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<< River Street Parapet
shows misalignment due
to movement of spandrel
wall
Arch Barrels and Ringstones
Spandrel Walls
Concrete Parapet and Sidewalk
Abutments, Piers, Wingwalls
River Street Deterioration of Arch Barrel
and Ringstone
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
River Street Deterioration of Wingwall
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Western Avenue
Deterioration of Parapet
River Street Existing Conditions
River Street Arch Bridge over Charles River
Existing Cross-Section
<< Existing Section through the
south sidewalk near the
Quarter Point of the Center
Arch
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Western Avenue Bridge
Existing Cross-Section
Existing Conditions will
need to be Upgraded from
Original Design to meet
current load and vehicular
impact requirements.
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Bridge Rehabilitation Project
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Existing Conditions
Bridges over Soldiers Field Road
• Concrete Tee Beams and
Deck
– Overall Deteriorated
Condition
• Sidewalks and Railings
– Localized Deterioration of
Sidewalks
– No crash-worthy railing
– Lack of accessibility
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Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Existing Pedestrian/Bicycle Conditions
• Lack of pedestrian signal indications
• Varying and sometimes narrow path widths
• Lack of ADA compliance
• Insufficient queuing space at intersections
• Lack of bicycle accommodations
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Alternatives Analysis
Bridges
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Options considered for Arch Bridges over Charles River
1)
Replace in kind spandrel walls, parapets, sidewalks, and wingwalls. Maintains historic
character, but would not extend services live of bridge since arches would not be
rehabilitated.
1A) PREFFERED - Rehabilitate as above but expose and repair entire arches and install a
new water-proofing membrane over the arch and a new concrete deck to extend the
service life of the bridge.
2) Complete structure replacement would involve a lengthier disruption of traffic and a
much greater cost.
•
Options considered for Bridges over Soldiers Field Road (SFR)
1) Replace deck only, leaving concrete girders in place and not extend the services life of
the bridge, but increases capacity.
2-2A) Complete superstructure replacement using steel string/concrete-encased steel
stringers with a new concrete deck, extends service life and increase bridge capacity.
3) PREFFERED - Complete superstructure replacement using NEXT Beams with a new
concrete deck, extends service life and increase bridge capacity at a lower cost than
2/2A.
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Alternatives Analysis
Bicycle and Pedestrian Accommodation Options in East-West Direction
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Options Considered in Functional Design Report
– December 2010
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On-street Bicycle Lanes Option
On-street Cycle Track Option
Off-street Shared Use Path
Adjacent Facilities Determined – Winter 2011
Existing and Planned
Bicycle Facilities
Shared Use Path
Cycle Track
Shared Roadway
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Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Alternatives Analysis
Bicycle and Pedestrian Accommodation Options in North - South Direction
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Options considered
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At grade improvements at intersections
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Tunnel Underpass through Bridge Abutments
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Boardwalk Underpass through Bridge Arch Barrels
At-grade enhancements are the selected alternative since this option can significantly
improve safety and crossing conditions (by providing new crosswalks, shortening
crossing distances and lengthening crossing times).
The work being done to rehabilitate the bridges, however, will not preclude the
construction of underpasses in the future.
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Arch Bridges Rehabilitation Concept
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Proposed Rehabilitation Concept
Example Final Elevation: River Street over the Charles River
BOSTON
CAMBRIDGE
Design Features
All proposed features are
designed to restore the
bridge to its historic
appearance.
•New Reinforced Concrete Parapet
•New Spandrel Walls
•New Arch Ring Stones
•New Pile Supported Retaining Walls (Wingwalls)
•New Sidewalks
•New Roadway
•Repaired Piers & Abutments
•Repaired Concrete Arch Barrels
•Corner Expansion at Southwest Corner (“The Narrows”)
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
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River Street Proposed Rehabilitation Concept
Final Cross-Section: River Street Arch Bridge over Charles River
Design Features
• Bridge Street Lighting consistent
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•Controlled Density Fill
•Moment Slab Sidewalk
Design for Impact
Resistance
•Structural Concrete
Frame Spandrels
•New Roadway and
Concrete Slab
•Widened NonMotorized Facilities and
Dedicated Cycle Track
•Maintain 3 Motor
Vehicle Traffic Lanes
•Repaired Piers
•New historic street
lighting
River Street – Existing Cross Section
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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River Street – Proposed Cross Section
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Western Avenue – Existing Cross Section
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Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Western Avenue – Proposed Cross Section
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Cambridge Street over SFR Proposed Rehab. Concept
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Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Western Avenue over SFR Proposed Rehab. Concept
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Traffic – Proposed Improvements
• Pavement Markings and Signage
• New striping to clearly define lanes
• Improve lane utilization and capacity
• Reduce likelihood of vehicle conflicts
• New signage
• Assist navigation / Reduce confusion
• New Traffic Signal Equipment
• Overhead vehicle indications – mast-arms and span wires
• Improve visibility of vehicle indications
• Indications for Pedestrians and Bicyclists
• Traffic Signal Operations
• Updated clearance times for all modes
• Reduce likelihood of crashes / Conform to current design standards
• Improved traffic signal phasing and Enhance signal coordination
• Optimize the capacity at each signal / Reduce conflicting movements
• Increase the amount of concurrent bike and pedestrian phases
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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River Street/Cambridge Street
Proposed Design
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Western Avenue Proposed Design
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Bridge Rehabilitation Project
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Overall Pedestrian/Bicycle Improvements
• All new signal equipment and timings
• All crosswalks will include pedestrian indications
• Improve queue space at corners
• Widened ramps at trail crossings
• Widened sidewalks
• Improved signage & Way finding
River Street and Western Avenue
Bridge Rehabilitation Project
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Cycle Tracks
• Off-street Cycle Track over the bridges and along River Street
and Western Avenue
• Speed differential between users
• Existing usage patterns
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
• Right Turn Conflicts
• Facility Continuity
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Intersection Corner Improvements
Western Avenue
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April 10, 2013
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Intersection Corner Improvements
River Street / Cambridge Street
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Western Avenue – “Pork Chop”
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Bridge Rehabilitation Project
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Guides all EB vehicles
to turn right
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Prevent vehicles from
traveling across
Western Ave in wrong
direction
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Pedestrian and bike
refuge
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Reduces the number of
phases per cycle and
therefore reduces the
amount of delay for all
users
•
Retaining large strain
pole and foundation
River Street / SF Road – “The Narrows”
Existing Conditions
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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River Street / SF Road – “The Narrows”
South Approach to River Street Bridge – Boston Side
Existing
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
Proposed
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Charles River Crossings
Charles River Path Crossing Summary
Crossing Distance
Crossing Time
Intersection
River Street at Memorial Drive
Existing
Proposed
Change
Existing
Proposed
Change
19 sec
20-70 sec
Up to +51 sec
55 ft
46 ft
-9 ft
River Street at Soldiers Field
Road
(no ped.
Signals)
23-34 sec
Up to +34 sec
57 ft
33 ft
-24 ft
Western Avenue at Memorial
Drive
19 sec
19-37 sec
Up to +18 sec
54 ft
40 ft
-14 ft
Western Ave. at Soldiers Field
Road
19 sec
38-54 sec
Up to +35 sec
56 ft
40 ft
-16 ft
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Landscape Approach
MEMORIAL DRIVE
• Proposed landscape impacts are
primarily isolated to areas
adjacent to the bridges.
• Landscape restoration includes:
• Control of invasive plant
species,
• Restoring vegetation on
disturbed areas,
• Slope stabilization adjacent to
wingwalls, and
• 2:1 replacement of (29) trees
removed.
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Stormwater Management Approach
Charles River is an Impaired
Waterbody and project will comply
with the MassDEP Stormwater
Policy and EPA’s NPDES MS4
General Permit.
To improve water quality and minimize impacts form runoff, MassDOT is
evaluating the location and selection of stormwater BMPs, including• Retrofitting existing closed system
• Installing deep sump catch basins
• Subsurface infiltration structures
• Infiltration basins
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Bridge Rehabilitation Project
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April 10, 2013
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Resource Area Impact Summary
• Permanent Alterations required for:
– Bump out of wingwall, 85 sf LUW
• Temporary Alterations:
– LUW required for rehabilitation work along piers,
wingwalls, abutments within coffer dams
– 25’ Riverfront Area for work associated with roadway and
sidewalk reconstruction, and landscaping
– BLSF and Bank for work associated with landscaping
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Wetlands Impact Areas
River / Cambridge Street Bridge – Boston
• Insert here
• LUW Impacts:
•85 sf Perm. for bump
out of wingwall at “the
narrows”
•Temp. for repair
wingwalls, piers, and
abutments
•Temporary Impacts to
Riverfront Area, Bank, and
BLSF
•Associated with
roadway and bridge
work and
tree/brush/invasive
clearing to provide
construction access
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Wetlands Impact Areas
River Street Bridge – Cambridge
• Insert here
• LUW Impacts:
• Text
•85 here
sf Perm. for bump
out of wingwall at “the
narrows”
•Temp. for repair
wingwalls, piers, and
abutments
•Temporary Impacts to
Riverfront Area, Bank, and
BLSF
•Associated with
roadway and bridge
work and
tree/brush/invasive
clearing to provide
construction access
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Wetlands Impact Areas
Western Avenue Bridge – Boston
• Insert here
• LUW Impacts:
•85 sf Perm. for bump
out of wingwall at “the
narrows”
•Temp. for repair
wingwalls, piers, and
abutments
•Temporary Impacts to
Riverfront Area, Bank, and
BLSF
•Associated with
roadway and bridge
work and
tree/brush/invasive
clearing to provide
construction access
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Wetlands Impact Areas
Western Avenue Bridge – Cambridge
• Insert here
• LUW Impacts:
•85 sf Perm. for bump
out of wingwall at “the
narrows”
•Temp. for repair
wingwalls, piers, and
abutments
•Temporary Impacts to
Riverfront Area, Bank, and
BLSF
•Associated with
roadway and bridge
work and
tree/brush/invasive
clearing to provide
construction access
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Regulatory Requirements
• Section 106 of National Historic Preservation Act (NHPA)
• Clean Water Act/Rivers and Harbors Act - Army Corps
Permit
• Clean Water Act - MassDEP 401 Water Quality Certificate
• Public Waterfront Act (MGL Chapter 91) – Minor Modification
• MWRA 8(m) Permit
• MA Wetlands Protection Act - Order of Conditions from
Boston and Cambridge Conservation Commissions
• United States Coast Guard Construction Approval Letter
• US EPA NPDES Permit
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Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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Summary of Project Benefits
• Rehabilitate deteriorated historic bridges
• Improve traffic intersections
• Provide cycle tracks across bridges and
improve bicycle and pedestrian movement
along river corridor
• Avoid and minimize impacts to
environmental and historic resources
• Stormwater Upgrades and Improvements
• Landscape Improvements
River Street and Western Avenue
Bridge Rehabilitation Project
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MEPA Process Reminder
Comments due to MEPA on April 16, 2013.
Secretary Certificate issued on April 26, 2013.
Written comments on the ENF should be sent to:
MassDOT, Highway Division
Environmental Services
Attn: Beth Suedmeyer
10 Park Plaza, Room 4260
Boston, MA 02116-3973
Beth.Suedmeyer@state.ma.us
Secretary Richard K. Sullivan, Jr.
Executive Office of Energy and
Environmental Affairs, Attn: MEPA Office
Deidre Buckley, EEA No. 15029
100 Cambridge Street, Suite 900
Boston, MA 02114
Or via email: deirdre.buckley@state.ma.us
Project Website: www.mass.gov/massdot/charlesriverbridges
River Street and Western Avenue
Bridge Rehabilitation Project
MEPA Consultation Meeting
April 10, 2013
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