Study Advisory Group Meeting #5
April 8, 2015 – 4:00PM
Buzzards Bay Coalition, New Bedford
Agenda
• Introductions
• Study Purpose & Process
• Alternatives Analysis
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Bridge Operations
Transportation Impacts
Safety
Economic Development
Environment
Community
Alternative Feasibility
• What’s Next?
Introductions
• MassDOT
– Ethan Britland – Project Manager
• HDR Study Team
– John Weston – HDR Team Project Manager
– Stefanie McQueen – Planning
– 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
Why Study the Bridge?
Key Issues/Constraints
1. Bridge Reliability/ Structural
Soundness
2. Bridge Navigational Width
3. Bridge Vertical Clearance
4. Frequency/Duration of Openings
5. Environmental Considerations
6. Bicycle/Pedestrian Conditions
Long-Term (Bridge) Alternatives
Alternative 1
Vertical-Lift Bridge
Alternative 2
Double-Leaf Bascule Bridge
Alternative 3
Single-Leaf Rolling Bascule Bridge
Alternative 3W Double-Leaf Rolling Bascule Bridge
No Build
Vertical-Lift Bridge
James River Bridge, Virginia (U.S. 17)
Repair Existing Swing Bridge
Single-Leaf Bascule Bridge
Salmon Bay Bridge, Seattle ,WA
Alt 1. Vertical Lift Bridge
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Two towers – 170-200 ft. high
Navigational channel width – up to 270 ft.
Air draft – 110-150 ft. (110 ft. as shown)
Construction Duration – 33 months
– Roadway Closures – one time, 2 weeks (Month 28)
– Navigational Closures – 1 long weekend (Month 28)
• Estimated Capital Cost - $90-120 million
Alt 1. Vertical Lift Bridge Graphic
View from Captain Leroy’s on Pope’s Island
Alt 2. Double-Leaf Bascule Bridge
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Counter-weight located below roadway surface
Navigational channel width – 150 ft.
Air draft – unlimited
Construction Duration – 37 months
– Roadway Closures – 24 months (Months 10-34)
– Navigational Closures – 3 long weekends (Months
10, 32 & 33)
• Estimated Capital Cost - $85-100 million
Alt 2. Double-Leaf Bascule Bridge Graphic
View from Captain Leroy’s on Pope’s Island
Alt 3. Single-Leaf Rolling Bascule Bridge
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Counter-weight located above roadway surface
Navigational channel width – 150 ft.
Air draft – unlimited
Construction Duration – 26 months
– Roadway Closures – three months (Months 18-20)
– Navigational Closures – 1 long weekend (Month 21);
West Channel closed for two months (Months 19-20)
• Estimated Capital Cost - $50-70 million
Alt 3. Single-Leaf Rolling Bascule Bridge Graphic
View from Captain Leroy’s on Pope’s Island
Potential to Maximize Use of North Harbor
The existing bridge limits the utilization of the North
Harbor including:
Alt 3W. Double-Leaf Rolling Bascule Bridge
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Counter-weight located above roadway surface
Navigational channel width – 220 ft.
Air draft – unlimited
Construction Duration – 26 months
– Roadway Closures – three months (Months 18-20)
– Navigational Closures – 1 long weekend (Month 21);
West Channel closed for two months (Months 19-20)
• Estimated Capital Cost - $90-110 million
Alt 3W. Double-Leaf Rolling Bascule Bridge Plan
No-Build Alternative – Repair Swing Bridge
• Repair of Existing Swing Bridge, including
replacement of superstructure
• Navigational channel widths – 94 and 95 ft.
• Air draft – unlimited
• Construction Duration – 18 months
– Roadway Closures – 2 weeks
– Navigational Closures – 2 long weekends
• Estimated Capital Cost – $45 million
No-Build Alternative – Existing Bridge
View from Captain Leroy’s on Pope’s Island
Alternatives Analysis/Evaluation Criteria
• Evaluation Criteria:
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Bridge Operations (i.e., vertical clearance, number of openings)
Transportation Impacts (i.e., vehicle delay, connectivity)
Safety (i.e., emergency vehicle access, navigation safety)
Economic Development (i.e., shipper cost savings)
Environment (i.e., coastal or wetland resource impacts)
Community (i.e., open space or cultural resource impacts)
Alternative Feasibility (i.e., costs, construction duration)
• Rating System:
Bridge Operations
Evaluation Category
(Evaluation Criteria)
Bridge opening times
Minutes per bridge closure
(shortest)
Vertical clearances
Feet of vertical clearance (vessel
height)
Horizontal clearances
Feet of horizontal clearance
(vessel width)
Est. number of daily bridge
openings Number per day
No-Build:
Repair
Existing
Swing
Bridge
Alternative 3W:
Alternative 2: Alternative 3:
Double-Leaf
Single-Leaf
Alternative 1: Double-Leaf
Rolling
Bascule
Vertical Lift
Rolling
Bascule
Bridge
Bridge
Bascule Bridge
Bridge
7.5 minutes
7.5 minutes
7.5 minutes
7.5 minutes
7.5 minutes
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◒
◒
◒
Unlimited
110-135 feet
Unlimited
Unlimited
Unlimited
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○
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●
95 feet
270 feet
150 feet
150 feet
220 feet
○
●
◒
◒
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11 to 20
11 to 20
11 to 20
11 to 20
11 to 20
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Transportation Impacts
Evaluation Category
(Evaluation Criteria)
Operational functionality
Corridor intersections level of service (LOS)
Operational functionality
Corridor volume to capacity ratios
Travel time
Average roadway travel time along corridor
Travel time
Average roadway delay (Route 6)
Travel time
Average vessel delay
Pedestrian and bicycle mobility and connectivity
Compliance with ADA requirements
Pedestrian and bicycle mobility and connectivity
Bicycle/pedestrian delay
Pedestrian and bicycle mobility and connectivity
Provision of bicycle facilities
Pedestrian and bicycle mobility and connectivity
Provision of pedestrian facilities
No-Build:
Repair Existing Swing Bridge
1 intersection below LOS D
Corridor V/C ratios acceptable
6.5 to 9 minutes without bridge delay
3 to 4.5 minutes plus bridge delay
25% of large cargo vessels delayed
1 day
Compliant
Delay due to bridge opening
Roadway shoulders on bridge less
than 2 feet
Sidewalks currently exist on bridge
All Build Alternatives
Vertical Lift, Bascule Bridge,
Rolling Bascule Bridge)
No Change
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No Change
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No Change
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No Change
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Reduces/ Eliminates Delay
◒
Compliant
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No Change
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Provided (wider shoulders)
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Provided (sidewalks)
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Safety
Evaluation Category
(Evaluation Criteria)
Vehicular Safety
Conformance with AASHTO and MassDOT
standards
Vehicular Safety
Delay to emergency vehicle access
Pedestrian and bicycle safety
Impact to high volume bicycle and pedestrian
locations
No-Build:
Repair Existing Swing Bridge
All Build Alternatives
(Vertical Lift, Bascule Bridge,
Rolling Bascule Bridge)
Conforms
Conforms
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Need for bridge opening causes
delay
No Change
No high volume locations
N/A
Marine Safety
Impact to safe navigation
N/A
Vehicular Safety
Delay to emergency marine access
N/A
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Greatly Improved
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Improved
●
Economic Development
Evaluation Category
(Evaluation Criteria)
No-Build:
Repair Existing Swing Bridge
All Build Alternatives
(Vertical Lift, Bascule Bridge,
Rolling Bascule Bridge)
None
Business Impact from Bridge
Number of businesses impacted
N/A
Business Impact from Bridge
Value of businesses impacted
N/A
N/A
Business Impact from Bridge
Number of jobs lost from businesses
impacted
N/A
N/A
Economic Benefits from Bridge
Shipper cost savings
N/A
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$480,000
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Environment
Evaluation Category
(Evaluation Criteria)
Environmental Impacts
Impact to coastal resources
Environmental Impacts
Impact to wetland resources
Alternative 3:
Single-Leaf
Rolling
Bascule
Bridge
Alternative
3W: DoubleLeaf Rolling
Bascule
Bridge
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Potential Minor/
Moderate
Impacts
Potential Minor
Impacts
Potential Minor
Impacts
Potential Minor
Impacts
Potential Minor/
Moderate
Impacts
Potential Minor
Impacts
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Potential Minor
Impacts
Potential Minor
Impacts
Potential Minor
Impacts
Potential Minor
Impacts
Potential Minor
Impacts
Limited Impacts
Limited Impacts
Limited Impacts
Limited Impacts
No-Build:
Repair
Existing
Swing Bridge
Alternative 1:
Vertical Lift
Bridge
N/A
Potential Minor
Impacts
N/A
Environmental Impacts
Impact to natural resources
N/A
Environmental Impacts
Impact to air quality and
greenhouse gases from idling
vehicles
N/A
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Alternative 2:
Double-Leaf
Bascule
Bridge
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◒
◒
◒
◒
◒
◒
◒
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Environment: Natural/Cultural Resources
Coastal Resources Map
Natural Resources Map
Community
No-Build:
Repair Existing Swing
Bridge
All Build Alternatives
(Vertical Lift, Bascule Bridge,
Rolling Bascule Bridge)
Community Impacts
Impact to protected and recreational open space
N/A
No Impact
Community Impacts
Impact to historical/archeological resources
N/A
Limited Impact
Community Impacts
Impact to cultural resources
N/A
Replacement of historic bridge
Community Impacts
Impact to business access
N/A
No Impact
Community Impacts
Impact to environmental justice populations
N/A
Limited Impact
Visual Impacts
Visual impacts
N/A
Some Impact
Evaluation Category
(Evaluation Criteria)
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Community: Community Resources
Community Services
and Key Destinations
Community: Historic Resources
Historic Properties and
Districts Map
Alternative Feasibility
No-Build:
Repair
Existing
Swing
Bridge
Alternative 1:
Vertical Lift
Bridge
$45 Million
$90-$120 Million
$85-$100 Million
$50-$70 Million
$90-$110 Million
Cost
Annual O&M costs
$400,000
$490,000
$490,000
$400,000
$490,000
Construction phase impacts
Construction duration
18 months
33 months
37 months
26 months
26 months
Construction phase impacts
Impacts to vehicular traffic
2 wk road closure
2 wk road closure
24 mth road closure
3 mth road closure
3 mth road closure
Construction phase impacts
Impacts to marine traffic
2 weekend closure
1 weekend closure
3 weekend closure
1 weekend closure
1 weekend closure
Minor-Moderate
access impacts
Moderate access
impacts
Significant access
impacts
Moderate access
impacts
◒
○
Moderate access
impacts
None anticipated
None anticipated
None anticipated
None anticipated
Evaluation Category
(Evaluation Criteria)
Cost
Capital costs
Construction phase impacts
Indirect impacts to abutting land
owners/businesses
Right-of-way impacts
Permanent and temporary rightof-way impacts
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N/A
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●
●
Alternative 3W:
Alternative 3:
Double-Leaf
Alternative 2:
Single-Leaf
Rolling
Double-Leaf
Rolling
Bascule
Bascule Bridge Bascule Bridge
Bridge
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Alternative Comparison Matrix
Evaluation
Category
Evaluation Criteria
No-Build:
Repair Existing
Swing Bridge
Alternative 1:
Vertical Lift
Bridge
(Rating)
Alternative 2:
Double-Leaf
Bascule Bridge
(Rating)
Alternative 3:
Single-Leaf
Rolling Bascule
Bridge (Rating)
Alternative 3W:
Double Leaf
Rolling Bascule
Bridge (Rating)
Unlimited
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110-135 feet
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Unlimited
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Unlimited
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Unlimited
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95 feet
○
270 feet
●
150 feet
◒
150 feet
◒
220 feet
●
Vertical
clearances
Feet of vertical clearance
(vessel height)
Horizontal
clearances
Feet of horizontal clearance
(vessel width)
Marine safety
Impact to safe navigation
N/A
Greatly Improved
●
Moderately Improved
◒
Moderately Improved
◒
Greatly Improved
●
Visual impacts
Visual impacts
N/A
Some Impact
○
No Impact
●
Limited Impact
◒
Limited Impact
◒
Cost
Capital costs
$45 Million
●
$90-$120 Million
○
$85-$100 Million
◒
$50-$70 Million
●
$90-$110 Million
◒
Cost
Annual operating and
maintenance costs
$400,000
●
$490,000
◒
$490,000
◒
$400,000
●
$490,000
◒
Construction
phase impacts
Construction duration
18 months
●
33 months
○
37 months
○
26 months
◒
26 months
◒
Construction
phase impacts
Impacts to vehicular traffic
2 wk road closure
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2 wk road closure
●
24 mth road closure
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3 mth road closure
◒
3 mth road closure
◒
Construction
phase impacts
Impacts to Marine traffic
Construction
phase impacts
Indirect impacts to abutting
land owners/businesses
2 weekend marine
closure
◒
Minor-Moderate
access impacts
●
1 weekend marine
closure
●
Significant access
impacts
○
3 weekend marine
closure
○
Significant access
impacts
○
1 weekend marine
closure
●
Moderate access
impacts
◒
1 weekend marine
closure
●
Moderate access
impacts
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Red Cell = primary differentiator
Yellow Cell = secondary differentiator
Alternative Cost Profiles
Cost
No-Build:
Alternative 1:
Repair
Existing Swing Vertical Lift
Bridge
Bridge
Alternative 2:
Double-Leaf
Bascule
Bridge
Alternative 3:
Single-Leaf
Rolling
Bascule
Bridge
Alternative
3W: DoubleLeaf Rolling
Bascule
Bridge
Capital Cost
$45 million
$90-$120
million
$85-$100
million
$50-$70 million
$90-$110
million
Annual Operating and
Maintenance Costs (2015$)
$415,000
$489,700
$489,700
$407,500
$489,700
50-year Major Repair Costs
(2015$)
$10.6 million
$15.5 million
$14.6 million
$9.55 million
$12.1 million
Total 50-year Life Cycle
Costs (2015$)
$76.1 million
$145 million
$131.6 million
$90 million
$136.6 million
Net Present Value
$42.6 million
$93.2 million
$84.0 million
$57.9 million
$88.7 million
What’s Next?
• Complete Final Recommendations
• Upcoming Meetings:
– Public Informational Meeting (May 7, 2015)
– SAG Meeting (May 2015)
• Final Report (June 2015)
Questions?
Study information can be found on the study website:
http://www.massdot.state.ma.us/newbedfordstudy
Comments and feedback can be emailed to:
jbarrett@fhiplan.com