chincoteague project overview presentation goals
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Chincoteague Project Overview
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Henri Sinson, PE
Virginia Concrete Conference
March 6, 2008
Long Life Aspects
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Presentation Goals
• Project Overview• Site Conditions• Scope• Alignment• Constructability
• Bascule Span Highlights• Approach Substructure
• Satisfied Aesthetic Requirements• Satisfied Subsurface Conditions• Details for Long Life
• Approach Superstructure• Satisfied Aesthetic Requirements• Details for Long Life• Innovation for Efficiency• Innovation for Long Life
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Project Overview
• Bridge on Rte 175 Over Black Narrows and Lewis Creek Channel
• Accomack County and Town of Chincoteague, Virginia
• 4035’-0” low level bridge
• 123’-6” single leaf bascule span
• 729’-0” low level connector bridge
• Owner: VDOT
• Designer: Hardesty & Hanover, LLP
• Contractor: American Bridge
• Contractor Bid: $68.7 million
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Site Conditions
Town of Chincoteague & Marsh IslandOld Chincoteague Bridge
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Site Conditions
Mar
sh Is
land
Chinco
teague I
sland
Cha
nnel
Old ChincoteagueSwing Bridge
Old BlackNarrows Bridge
Site Plan
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Scope
Mar
sh Is
land
Chinco
teague I
sland
Cha
nnel
4035’-0”
Old ChincoteagueSwing Bridge
729’-0”
Old BlackNarrows Bridge
New SingleLeaf BasculeNew Rte 175 Bridge
New Marsh IslandConnector Bridge
Site Plan
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Alignment
Mar
sh Is
land
Chinco
teague I
sland
Cha
nnel
4035’-0”
729’-0”
Site PlanNew SingleLeaf BasculeNew Rte 175 Bridge
New Marsh IslandConnector Bridge
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Constructability
Mar
sh Is
land
Chinco
teague I
sland
Cha
nnel
4035’-0”
729’-0”
Site PlanNew SingleLeaf BasculeNew Rte 175 Bridge
New Marsh IslandConnector Bridge
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Span
• 92’-0” Span Length• Closed Pit Pier• 5” Half filled grating• 1662 Kip Leaf• 26” Trunnion Diameter• Gear Driven• 75 HP, 900 RPM Primary
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Span
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Span
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Pier
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Pier Deck Removed
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Pier Stringers Removed
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Bascule Span Removed
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Approach Substructure
Mar
sh Is
land
Chinco
teague I
sland
Site Plan
Cha
nnel
New SingleLeaf BasculeNew Rte 175 Bridge
New Marsh IslandConnector Bridge
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Approach Substructure
Mar
sh Is
land
Chinco
teague I
sland
Bents 1-49
Bents 50-59
Site Plan
Cha
nnel
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Substructure Aesthetics
Typical Trestle Bent
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Substructure Aesthetics
Cylinder Pile Bent
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Subsurface
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Substructure Details
Bent Elevation
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Substructure Details
43’-4”
12’-0” 12’-0” 12’-0”
Prestr.CylinderPile
CIP Pile Cap
Cheekwall
4’-6”
4’-2”
Prestr.CylinderPile
PileSection
3’-0”
BentSection
Bent Elevation
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Approach Substructure
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Approach SubstructurePhoto Courtesy of Jacobs Engineering Group Inc.
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Approach Superstructure
“Baseline” Bridge Elevation
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Superstructure Aesthetics
Addition of Cheekwalls
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Superstructure Aesthetics
Addition of Arched Fascia Beams
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Superstructure Details
80’-0” 80’-0” 80’-0” 80’-0”
4 Span Continuous Unit
Framing Plan
Prestr.Bulb-T
Prestr.FasciaBeam
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Superstructure Details
1’-8” 20’-0” 20’-0” 1’-8”
45” Prestr.Bulb-T
Prestr.FasciaBeam
Cross Section
9’-5” 9’-5”9’-5” 9’-5”
TL-4 Wyoming Railing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Efficiency
Arched Prestressed Fascia Beam
54”
45”
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Efficiency
Arched Prestressed Fascia Beam
Prismatic
Section
(Large Adjustm
ents)Arched Secti
on
(Constant)
Arched Section
(Constant)
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Efficiency
Arched Prestressed Fascia Beam
Arched Section
(Constant)
Prismatic
Section
(Shortened)
Arched Section
(Constant)
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Efficiency
Arched Prestressed Fascia Beam
Arched Section
(Constant)
Arched Section
(Constant)
End Section(Small Adjustments)
Prismatic
Section
(Shortened)
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Mar
sh Is
land
Chinco
teague I
sland
Cha
nnel
Site Plan
Intersection Framing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Intersection Framing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Arched Section
Prismatic
Section
Intersection Framing
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HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Intersection Framing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Dapped End
Arched Section
Intersection Framing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Arched Section
Intersection Framing
Dapped End
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Intersection Framing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Intersection Framing
HARDESTY & HANOVER, LLPE N G I N E E R I N G
Virginia Concrete Conference, Chincoteague Project Overview
Innovation for Long Life
Intersection Framing