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Innovation, Efficiency, Transparency
H MS P R E S E N T A T I O N O C T O B E R 2 0 1 0
Innovation, Efficiency, Transparency
MassDOT Accelerated Bridge Program Fore River Bridge is a key component of the MassDOT
Accelerated Bridge Program (ABP) $3B commitment over 8 years Goal to reduce the number of structurally deficient bridges
over life of the program Innovative techniques to be used
– Accelerated Bridge Construction Techniques– Advanced Project Scheduling and New Estimating Techniques– Streamlined Environmental Permitting– Single-Phase Construction– Innovative Construction Contracting
Innovation, Efficiency, Transparency
Location Map: New England
Innovation, Efficiency, Transparency
Location Map
Innovation, Efficiency, Transparency
Project History 1902 – Swing bridge constructed at the site 1936 – Bascule Bridge constructed at the site 1973 – MassDOT proposes 300-foot channel width 1986 – Fore River Shipyard closes 1997 – MassDOT proposes bridge rehab requiring temporary
bridge (10-year design) 2000 – 1936 bridge condition found too deteriorated 2002 – Type study performed 2003 – Temporary Bridge opens 2004 – 1936 Bridge Demolished 2009 – Fender system upgraded 2012 – D-B contract date 2016 – Construction complete
Innovation, Efficiency, Transparency
Fore River Shipyard & 1902 Swing Bridge
Innovation, Efficiency, Transparency
Fore River Shipyard 50,000 employees during World War II
Thomas W. Larson, 1902 USS Massachusetts, 1942
Innovation, Efficiency, Transparency
1936 Historic Bascule Bridge
Innovation, Efficiency, Transparency
Existing Temporary Bridge
Innovation, Efficiency, Transparency
Channel Navigation Fore River is a Designated Port Area (DPA) under the
Massachusetts Office of Coastal Zone Management Fore River provides marine access to local yacht clubs, the
former shipyard property, and the CITGO tank farm Navigational usage today
– Panamax Class Oil Tankers– 175-foot channel too narrow
Future navigational usage– 250-foot acceptable– 225-foot absolute minimum
GOAL: Improve Navigation Access
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Innovation, Efficiency, Transparency
Roadway Traffic Usage Route 3A provides a vital roadway link to Boston for South
Shore residents Route 3A carries approximately 32,000 vehicles per day Bridge openings have an impact on commuting times Alternate routes around the Fore River Bridge are long and
involve passing through congested intersections
GOAL: Reduce Number of Openings
GOAL: Reduce Total Duration of Openings
Innovation, Efficiency, Transparency
Conceptual Roadway Profile
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Innovation, Efficiency, Transparency
Typical Cross Section
Innovation, Efficiency, Transparency
Movable Structure AlternativesBascule
Innovation, Efficiency, Transparency
Movable Structure AlternativesVertical Lift
Innovation, Efficiency, Transparency
Recorded Annual Bridge Openings
Tanker 131 188 163 136 173 165
Barge 104 84 99 151 105 110
Tugboat 45 32 9 29 47 29Miscel laneous Commercia l Vessel*
N/A 19 42 60 93 54
Sloop 327 87 85 79 85 84Bridge Maintenance/ Testing
39 61 181 167 200 152
Tota l 646 471 579 622 703 594
*Includes freighters , car carriers , supply ships , construction support vessels , etc.
Recorded Annual Openings (August through July)
Vessel Type
Temporary Bridge Opening Log DataBascule Bridge
Opening Log Data , 2000
2005-2006 2006-2007 2007-2008 2008-2009 Average
Innovation, Efficiency, Transparency
Analysis of Sloop Openings
Innovation, Efficiency, Transparency
Projected Annual Bridge Openings
Tanker 165 165 165
Barge 110 110 110
Tugboat 29 29 29
Miscel laneous Commercia l Vessel* 54 54 54
Sloop 57 235 84
Bridge Maintenance/ Testing 60 40 152
Total 475 633 594*Includes freighters , car carriers , supply ships , construction support vessels , etc.
Projected - Vertica l Li ft
Average Recorded - Temporary
Vessel Type
Projected Annual Openings (August through July)
Projected - Bascule
Innovation, Efficiency, Transparency
Scour Results – 500-Year Storm
Bascule Bridge
Vertical Lift Bridge – North Towers
Innovation, Efficiency, Transparency
Innovation, Efficiency, Transparency
Vertical Lifts: Temporary vs Permanent
CRITERIA TEMPORARY PERMANENT
DESIGN LIFE 15 YEARS 75 YEARS
BASIS FOR MECHANICAL DESIGN CRANE GUIDELINES AASHTO
OPERATES IN HIGH WINDS NO YES
WIRE ROPE LUBRICATION CONSTANT MAINTENANCE NORMAL MAINT.
NAVIGATION CHANNEL WIDTH 175 FT 250 FT
EASE OF NAVIGATION DIFFICULT EASIER
DECK SYSTEM STEEL (LOUD) CONCRETE
AVERAGE OPENING TIME 21 MINUTES 13 MINUTES (EST.)
Innovation, Efficiency, Transparency
Existing Temporary Bridge
Innovation, Efficiency, Transparency
Bascule Bridge
Innovation, Efficiency, Transparency
Proposed Vertical Lift – No Cladding
Innovation, Efficiency, Transparency
Existing Temporary Bridge
Innovation, Efficiency, Transparency
Bascule Bridge
Innovation, Efficiency, Transparency
Bascule Bridge
Innovation, Efficiency, Transparency
Proposed Vertical Lift – Clad Option
Innovation, Efficiency, Transparency
Proposed Vertical Lift – No Cladding
Innovation, Efficiency, Transparency
Existing Temporary Bridge
Innovation, Efficiency, Transparency
Proposed Vertical Lift – No Cladding
Innovation, Efficiency, Transparency
Tower Alternatives
Innovation, Efficiency, Transparency
Bridge ComparisonCRITERIA VERTICAL LIFT BASCULE
HORIZONTAL CHANNEL CLEARANCE 250’ 225’
VERTICAL CHANNEL CLEARANCE 58’ 41’
PROJECTED NUMBER OF OPENINGS 475 633
FOUNDATION FOOTPRINT 10,000 SF 18,000 SF
ANNUAL LIFE CYCLE COST $8.9 MILLION $9.4 MILLION
FABRICATION/INSTALLATION OF MACHINERY EASE OF MAINTENANCE
RIDEABILITY EASE OF NAVIGATION
PERMITTING AESTHETICS
ABILITY TO MEET PROJECT GOALS = Preferred Alternative
Innovation, Efficiency, Transparency
Thank You –Questions
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