walk bridge replacement project - american public ......hntb corporation summary of presentation 1....
TRANSCRIPT
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Walk Bridge Replacement Project
A Sustainable Projectfor Norwalk &
the Northeast Corridor
Sarah Walker, AICP ENV SPHNTB Corporation
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Summary of Presentation1. Project Setting
2. Project Challenge
3. Innovative Construction Approach
4. Construction Coordination Plans
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Walk Bridge
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Walk Bridge: Regional & Local Significance
125,000 passengers & 175 trains daily
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Selected Project Design: Vertical Lift Span
• Shortest construction schedule• Lowest construction risks • Shortest period of navigational
restrictions• Least natural resources impacts• Least social & economic impacts
to Norwalk
Challenge: Maintain Commuter Rail Service & Minimize Community Impacts
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Integrated Design and Construction Process
• Historic Building Protection
• Business Coordination
• Marine Use
• Transportation
• Maritime Aquarium Coordination
Historic Building
Protection
Project Sustainability
Safety and Security Plans
Community-Based Protection Plans
Resource-Based Protection Plans
Construction Manager/General Contractor
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Innovative Construction Approach
Construction Manager/General
Contractor Alternative Delivery
DESIGNER CM/GC
PM Consultant
Independent Cost Estimator
ConnDOT
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Benefits of CM/GC Process• Provides advice to
designer
• Identifies innovative construction solutions
• Coordinates planning & construction operations
• Promotes collaboration & efficiency
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Examples of Designer-CM/GC Collaboration
Wetland Mitigation Design Bridge Component Salvage
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Construction Coordination Plans
• Historic Building Protection
• Business Coordination
• Marine Use
• Transportation
• Maritime Aquarium
Historic Building
Protection
• Noise and Vibration
• Air Quality
• Water Quality Control
• Materials Management
Resource Protection
Coordination Plan Types
Community Protection
Safety and Security
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Community-Based Plan: Historic Building Protection • Section 106 MOA Stipulation
• Protection expanded to include Zone of Influence buildings
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Historic Building Protection Plan
• Initial Building Condition Surveys
• Preventative Measures
• Test Pile Program Monitoring
• Pre-Construction Building Surveys & Follow-Up
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The New Walk Bridge - A Sustainable Solution Restore rail
infrastructure
Improve service safety & reliability
Expand & enhance service
Upgrade tracks to support local & express service CTDOT’s Goals for New York to New
Haven Corridor