Public Meeting
July 10, 2013
1
WSC Design Build Team
Construction Team
J.F. White Contracting Company
Skanska USA Civil Northeast, Inc
Consigli Construction Co.
Design Team
STV – Lead Designer
Tetra Tech – Environmental Lead, Traffic Management
Gill Engineering Associates – Structural Design Support
McGinley-Kalsow & Associates – Project Architect
Regina Villa Associates – Public Outreach
Copley-Wolff Design – Landscape Architecture
Lin Associates – Substructure Design Support
TRC Environmental Corp – Hazmat/Demolition
Fortress – Emergency Preparedness
Bryant Associates – Survey/ ROW
UTRS – Corrosion & Stray Current Control
2
Introduction of DB Entity Personnel
Bill Shea
Leo Ryan
Peter Rapp
Robert Collari
Mike Keville
Mark Ennis
Erik Maki
Kate Barrett
3
Project Executive
Area Manager
Project Manager
Design Coordinator
General Superintendent
Design Manager
Traffic Mgmt & Signal Design
Public Outreach
(J.F. White)
(J.F. White)
(J.F. White)
(J.F. White)
(J.F. White)
(STV)
(Tetra Tech)
(Regina Villa)
Meeting Agenda – July 10
• Construction Staging Overview
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Overall Scope of Project
Schedule
MBTA Diversion Weekends
• Status Updates
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Current Activities
Public Involvement & Outreach
• Traffic Management Plan – Stage 1
4
Longfellow Bridge Project
5
Project Purpose and Goals
• Improve structural integrity and capacity
• Meet modern codes (including ADA accessibility)
• Improve multi-modal access and bridge to city street
connections
• Create safer configuration for all bridge users
• Restore historic elements
• Protect and enhance environment
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Design Considerations
 Restore Structural Integrity
– Arch Ribs
– Spandrel Columns
– Roadway Deck
– Substructure
– Seismic Restraints
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Design Considerations
8
Design Considerations
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Design Considerations
 Restore Historic
Elements
– Towers
– Railings/Fascia
– Arches/Columns
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Structure Design/Modeling
 Structure Analysis
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Structure Design/Modeling
 Pedestrian Bridge
12
Structure Design/Modeling
 Pedestrian Bridge
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Design Considerations
 Protect and
Enhance
Environment
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Improve Bike/Pedestrian/ADA Accessibility
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WSC Proposed Staging
General Overview
 Construction of the bridge is in 4 construction phases, but it
takes 6 traffic stages to perform the 4 construction phases
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WSC Proposed Traffic Stage 1
Construction Activities – July 2013 to August 2014
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Stage 1 - Outbound Detour Route
Primary Route
Revised Graphic to be inserted
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WSC Project Schedule
Begin Bridge Reconstruction
July 2013
Substantial Completion
September 30, 2016
Complete Track Reconstruction
October 2015
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WSC Proposed Weekend Diversions
25 Total vs. 82 Allowed by massDOT
25
20
Proposed Weekend Diversions
2013, 5 Weekends
19OCT13 20OCT13
Red Line Diversion Weekends for 2013:
August 10 – 11, 2013
August 24 – 25, 2013
October 19 – 20, 2013
October 26 – 27, 2013
November 2 – 3, 2013
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Red Line Weekend Service Diversions
Boston Bound Vehicle Detour (Approximately 5 – 10 weekends per year)
Revised Graphic to be inserted
22
Red Line Weekend Service Diversions
MBTA Bus Route
23
Status Updates
Construction
• Charles Circle
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Curb Realignment / Signal Work – Work continues this week
• Charles River Dam Road
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Restriping – Saturday
• Kendall Portal Crossover
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Curb Realignment – Starts this week
• Trees / Borings
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Transplants – 5 remaining in Cambridge – Continues this week
Tree Removal – Next week
Borings – Continues this week into next week
• Pan-Tilt-Zoom (PTZ) Cameras
• 19 of 23 cameras connected from cabinet to head end
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Charles Circle Curb Modifications
25
New Signal Mast Arm at Charles Circle
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Land Blvd at Charles River Dam Road
27
Charles River Dam Road to Land Blvd
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Kendall Portal Crossover
29
Public Involvement & Outreach
Updates
• Public Involvement & Outreach - RVA
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Public Meeting July 10
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Traffic Stage 1 advisory & public meeting reminder
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Sent Monday by e-blast with Graphic
MBTA posted weekend diversion advisories
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7 to 9 PM at MIT, Building E 25, Room 111 (E25-111), 45
Carleton Street, Cambridge
listing the August through November weekends
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email – longfellowbridge@state.ma.us
website: www.mass.gov/massdot/longfellowbridge
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Dedicated Hot Line – 617-519-9892
Public Involvement & Outreach
Hotline Protocol
Hotline Protocol – Day/Night Shift
Cell Phone is Answered by Field Office
If Busy Voicemail lets them know they will get a call back in 2 hours.
Message/Complaint Intake Form is Completed
Record Copy of Completed Form Filed by WSC and Transmitted to RVA
Hotline Protocol – Off Shift
Voice Mail is Set Up to Receive all Off-Shift Calls
Field Office Returns all Off-Shift Calls Received at Beginning of Next Shift
Message/Complaint Intake Form is Completed
Record Copy of Completed Form Filed by WSC and Transmitted to RVA
31
Public Involvement & Outreach
Updates
Initial Public Meetings/Stakeholder Briefings
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Boston Transportation Department – numerous coordination meetings
Cambridge TP&T/Public Works – numerous coordination meetings
A Better City – numerous coordination meetings
Public Information Meeting for Kick Off (Shriners) – April 9
Beacon Hill Civic Association – April 18
Cambridge DPW Open House – April 23
Kendall Square Association – May 16
Mass General Hospital – May 20
MassDOT Stakeholder Traffic Meeting – June 6
West End Civic Association – June 13
East Cambridge Neighborhood Briefing – July 1
Public Meeting for Traffic Stage 1 (MIT) – July 10
WSC - Stage 1 Traffic Plan
Tetra Tech
Major Components:
• Traffic Management Plan
• Initial Traffic Monitoring Period
• Adjacent Project Coordination
• Ongoing Assessment & Mitigation
• Contingency Management Plans & Incident Action Plan
• Fortress Inc.
33
Traffic Management Plan
Portable Changeable Message Signs (PCMS) and Static Traffic Signs
34
Traffic Management Plan
MassDOT Overhead Variable Message Signs (VMS)
35
Traffic Management Plan
Public Outreach- MassDOT Overhead VMS Signs
36
Traffic Management Plan
Lower Basin Area PCMS Locations
37
Traffic Management Plan
Typical Static Traffic Sign
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Traffic Management Plan
Pre-Detour Alterations
39
Traffic Management Plan
Pan-Tilt-Zoom (PTZ) Cameras for Traffic Monitoring
40
Stage 1 - Outbound Detour Route
Primary Route
Revised Graphic to be inserted
41
Stage 1 - Inbound Detour Route
MBTA Bus Weekends
Revised Graphic to be inserted
42
Stage 1 – Charles Circle
Traffic Signal Modification Plan
43
Stage 1 – Charles Circle
Traffic Signal Phasing
44
Stage 1 – Crossover at Kendall Portal
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Stage 1 - Main Street at Memorial Drive
Ramp Circulation
46
Stage 1 - Broadway at Third Street
Median Crossover
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Bicycle and Pedestrian Wayfinding
Memorial Drive Cambridge
48
Traffic Monitoring Period- Overview
• Initial Two Week Period
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Starts Saturday July 20
• Non-destructive Activities on Bridge
• Intense Traffic Monitoring
• Daily Coordination Meetings
49
Traffic Monitoring Program
• Anticipated Diversion Routes
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Hot Spots
• BTD – Traffic Management Center
• WSC Staffing Plan
• Police Deployment Plan
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Traffic Monitoring Program
Anticipated Diversion Routes
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Traffic Monitoring Program
Hot Spots - Level of Service (am/pm)
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Traffic Monitoring Program
Initial Two Week Period
• BTD – Traffic Management Center
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TMC Staffing Plan (preliminary)
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TMC Hours of Operation
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Weekdays 6am-10pm; Saturday 9am-5pm
All-hands Meeting
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53
State Police, BPD, CPD
Fire/EMS
Boston / Cambridge Traffic
MassDOT / DCR / MBTA
WSC / Tetra Tech
Daily 10AM at TMC
Issues/Challenges/Lessons Learned
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Implementation/Correction - WSC
Staff reduction/Increases
Traffic Monitoring Program
Initial Two Week Period
• BTD – Traffic Management Center
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Resource – Pan-Tilt-Zoom (PTZ) Cameras
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Real Time Traffic Changes from TMC
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54
300 City-wide Cameras
23 new Cameras
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Activated Prior to Stage 1 Detour
Shared with HOC
Police Deployment
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Hot Spots
BTD Signal Timing
HOC – VMS messages
Communications – Field Staff / Police Details
Initial Two Week Period
Police Deployment Plan
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Initial Two Week Period
Police Deployment – Traffic Detail Locations
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Initial Two Week Period
Field Staff Locations – Tetra Tech
57
CMP and Incident Action Plans
Fortress, Inc.
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Police Detail Deployment Plan
Police Detail Location Plans
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Coordination with Adjacent Projects
Cambridge Website
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