SHRP 2 - R04 ABC Demonstration Bridge Design and Construction
AASHTO Committee on Construction San Francisco, CA August 16,
2012
Slide 2
Iowa ABC Demonstration Project Two Week Closure US Highway 6
Bridge over Keg Creek 6 miles east of Council Bluffs, IA Normal
construction duration 14-16 weeks ABC construction duration 14
days
Slide 3
Project Innovations Precast modular bridge system (including
precast approach pavement) Superstructure units create a semi-
integral abutment for rapid construction Durable, moment-resisting
UHPC joint between deck panels First bridge in US with full,
moment- resisting UHPC joint at the piers
Abutment Details Precast Abutment Construction Single piece
barrel section SCC to fill pile pockets Temporary support of
backwall until SCC reaches 3500 psi
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Semi- Integral Abutment
Slide 14
Abutment Construction
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SCC Concrete for Abutments
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Precast Piers
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Precast Pier Connections
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Column Assembly and Bracing
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Capbeam Assembly
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Modular Superstructure
Slide 21
Pier Joint Detail C Pier 1 L C Pier 2 L
Slide 22
PT Retrofit for Modules
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Module Transport
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Module Assembly
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Slide 26
Deck Joint Reinforcing
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UHPC Mixing
Slide 28
UHPC Placement
Slide 29
FHWA/HFL Workshop
Slide 30
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SHRP 2 - R04 ABC Demonstration Bridge Design and Construction
Questions?