Study Advisory Group Meeting #4
December 11, 2014 – 4:00PM
Buzzards Bay Coalition, New Bedford
Agenda
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Introductions
Study Purpose & Process
Short & Medium-Term Alternatives
Long-Term (Bridge) Alternatives
What’s Next?
– Alternatives Analysis (Evaluation Criteria)
– Project Schedule
Introductions
• MassDOT
– Ethan Britland – Project Manager
• HDR Study Team
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John Weston – HDR Team Project Manager
Stefanie McQueen – HDR Team Deputy Project Manager
Luigi Casinelli – HDR Team Traffic Lead
Reddy Edulakanti – HDR Team Traffic Engineer
Pete Davis – HDR Team Lead Bridge Designer
Jill Barrett (FHI) – Public Involvement
Study Purpose
• Evaluate multi-modal
transportation & associated
land use issues
• Develop potential solutions
• Recommend improvements
along the Route 6 Corridor
Study Process
MassDOT 5-Step Planning Process
Project Status Update
• Work Completed to Date:
 Draft Goals & Objectives
 Evaluation Criteria
 Public Involvement Plan
 Existing Conditions
 Issues & Constraints Analysis
 Preliminary Short & Medium-Term Alternatives
 Conceptual Long-Term Alternatives
• Next Steps:
– Refine Alternatives (Short, Medium & Long-Term)
– Evaluate Alternatives (using Evaluation Criteria & Public
Input)
– Make Final Recommendations for Improvements
Short/Medium-Term Alternatives
• Corridor Traffic Improvements
• Bicycle/Pedestrian Improvements
• Variable Message/ITS Signs
– Sign Systems
– Detour Routes
Corridor Traffic Improvements
Existing Conditions – 2014 LOS
Corridor Traffic Improvements
Future Conditions – 2035 No Build
Corridor Traffic Improvements
Future Conditions – 2035 with Improvements
Corridor Traffic Improvements
Proposed Improvements
Corridor Traffic Improvements
Corridor Travel Times & LOS
Bicycle/Pedestrian Improvements
Existing Conditions/Issues
Bicycle/Pedestrian Improvements
Existing (April 2015) Bridge Cross Sections
Middle Bridge (Swing Span) Cross Section
Typical Cross Section
Bicycle/Pedestrian Improvements
Proposed Bridge Bike Lane Addition Cross Section
New Middle Bridge Cross Section
Bicycle/Pedestrian Improvements
Proposed Lane Adjustment/Bike Lane Addition
Bicycle/Pedestrian Improvements
Proposed Lane Adjustment Cross Sections
Bicycle/Pedestrian Improvements
Alternative Lane Adjustment/Bike Lane Addition
Bicycle/Pedestrian Improvements
New Bedford Bicycle/Pedestrian Improvements
Bicycle/Pedestrian Improvements
Route 6/MacArthur Drive Pedestrian Ramp Options
Variable Message/ITS Signs
Existing & Proposed ITS Signs
Variable Message/ITS Signs
Existing and Proposed Detour Routes
Variable Message/ITS Signs
Go-Time/Real Time Traffic Management (RTTM) System
Left: Graphic User Interface for Travel Time Display
Top Right: Portable Variable Message Sign (VMS)
Bottom Right: Static Time Travel Board
Long-Term (Bridge) Alternatives
• Vertical-Lift Bridge
• Double-Leaf Bascule
Bridge (Standard)
• Single-Leaf Bascule
Bridge (Dutch or Rolling)
Vertical-Lift Bridge
James River Bridge, Virginia (U.S. 17)
Double-Leaf Bascule Bridge (Standard)
Berkley Bridge, Norfolk, VA (I-264)
Single-Leaf Bascule Bridge (Dutch)
Mystic River Bascule Bridge, Mystic, CT
Existing Bridge
• Key Considerations
– Maintenance of
roadway traffic
– Maintenance of
marine traffic
– Impacts to local
businesses
– Aesthetics
– Construction
requirements
– Costs
Vertical Lift Bridge - Overview
• Navigational channel width –
up to 280 ft.
– Horizontal clearance is
sufficient for anticipated
vessels (Hurricane Barrier is
150 ft.)
Pont Jacques Chaban-Delmas, France
• Air draft – maximum 120 ft.
– Vertical clearance is
sufficient for typical vessels
– Limits ability for specialized
cargo vessels, such as
those carrying wind turbine
components
New Memorial Bridge, Portsmouth, NH
Vertical Lift Bridge – Plan/Profile
Existing
Bridge
Vertical Lift
Bridge
Vertical Lift Bridge – Plan
Vertical Lift Bridge – Construction
• Staging: 3 lane vehicular traffic during construction
• Both navigational channels open during
construction
• Construction Duration – 33 months
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Mobilization (Months 1-6)
Construction (Months 6-33)
Fabrication (Months 5-24)
Roadway Closures – one time, 2 weeks (Month 28)
Navigational Closures – 1 long weekend (Month 28)
Vertical Lift Bridge – Costs/Opening
• Estimated Cost - $90 to 120 million
• Open/Close Time
– Existing Bridge – 7.5 minutes
– Vertical Lift – 7.5 minutes
• Partial Open/Close for Typical Fishing Vessel – may
save 30-60 seconds.
Double-Leaf Bascule Bridge - Overview
• Bridge counter-weight
located below roadway
surface
• Navigational channel
width – 150 ft.
– Horizontal clearance is
sufficient for anticipated
vessels (Hurricane
Barrier is 150 ft.)
• Air draft – unlimited
– No limits to vertical
clearance for vessels
Double-Leaf Bascule Bridge - Plan/Profile
Existing
Bridge
Double-Leaf
Bascule
Bridge
Double-Leaf Bascule Bridge - Plan
Double-Leaf Bascule Bridge - Construction
• Staging: vehicular traffic closed for most of
construction
• West channel closed during construction
• Construction Duration – 37 months
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Mobilization (Months 1-6)
Construction (Months 4-37)
Fabrication (Months 5-26)
Roadway Closures – 24 months (Month 10-34)
Navigational Closures – 3 long weekends (Months
10, 32 & 33)
Double-Leaf Bascule Bridge - Costs/Opening
• Estimated Cost - $85 to 100 million
• Opening/Close Time
– Existing Bridge – 7.5 minutes
– Double-Leaf Bascule Bridge – 7.5 minutes
• Limited opportunity for partial opening (partially
opened bridge represents a navigational hazard)
Single-Leaf Bascule Bridge - Overview
• Bridge counter-weight located above roadway
surface
• Navigational channel width – 150 ft.
– Horizontal clearance is sufficient for anticipated
vessels (Hurricane Barrier is 150 ft.)
• Air draft – unlimited
– No limits to vertical clearance for vessels
Single-Leaf Bascule Bridge - Plan/Profile
Existing
Bridge
Single-Leaf
Bascule
Bridge
(Rolling)
Single-Leaf Bascule Bridge - Plan
Single-Leaf Bascule Bridge - Construction
• Staging: 2 lane vehicular traffic during construction
• At least one channel open during construction (new
channel open in Month 22)
• Construction Duration – 26 months
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Mobilization (Months 1-6)
Construction (Months 6-26)
Fabrication (Months 5-17)
Roadway Closures – three months (Months 18-20)
Navigational Closures – 1 long weekend (Month 21)
and West Channel closed for two months (Months
19-20)
Single-Leaf Bascule Bridge - Costs/Opening
• Estimated Cost - $50 to 70 million
• Opening/Close Time
– Existing Bridge – 7.5 minutes
– Double-Leaf Bascule Bridge – 7.5 minutes
• Limited opportunity for partial opening (partially
opened bridge represents a navigational hazard)
What’s Next?
• Refine Alternatives (Short,
Medium, & Long-Term)
• Alternatives Analysis
– Evaluation Criteria will be
used to assess the
Alternatives
• Economic Development
Opportunities
• Bridge Operations
• Transportation Impacts
• Safety
• Environment
• Community
• Alternative Feasibility
Example Criteria:
• Number of businesses
impacted
• Construction Duration
• Vertical & horizontal
clearance (feet)
• Estimated number of
bridge openings
• Average delay times
• Impact to natural
resources
• Capital & maintenance
costs
Project Schedule
New Bedford-Fairhaven Bridge Corridor Study Schedule
Project Schedule
2014
TASK
1. Project Scoping (Study Area, Goals and Objectives)
2. Existing Conditions & Issue Evaluation
3. Alternatives Development
4. Alternatives Analysis
5. Recommendations
6. Final Report
Public and Stakeholder Participation
Public Informational Meeting =
Study Advisory Group (SAG) =
Jan Feb Mar Apr May Jun
Jul
2015
Aug Sept Oct Nov Dec Jan Feb Mar
Questions?
Comments and feedback can be emailed to
jbarrett@fhiplan.com