1. SHRP 2 - R04 ABC Demonstration Bridge Design and Construction AASHTO Committee on Construction San Francisco, CA August 16, 2012

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

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

4. UHPC UHPC Particle Packing UHPC Constituents: Portland cement silica fume fine, uniformly graded sand crushed quartz steel fibers water superplasticizers

5. 14-Day ABC Timeline 123 4 56789 10 111213 14

6. Bridge Farm Concept

7. Precast Abutments and Piers

8. Superstructure Modules

9. Deck Joint Forming

10. Deck Concrete Placement

11. Drilled Shaft Construction

12. Abutment Details Precast Abutment Construction  Single piece barrel section  SCC to fill pile pockets  Temporary support of backwall until SCC reaches 3500 psi

13. Semi- Integral Abutment

14. Abutment Construction

15. SCC Concrete for Abutments

16. Precast Piers

17. Precast Pier Connections

18. Column Assembly and Bracing

19. Capbeam Assembly

20. Modular Superstructure

21. Pier Joint Detail C Pier 1 L C Pier 2 L

22. PT Retrofit for Modules

23. Module Transport

24. Module Assembly

26. Deck Joint Reinforcing

27. UHPC Mixing

28. UHPC Placement

29. FHWA/HFL Workshop

31. SHRP 2 - R04 ABC Demonstration Bridge Design and Construction Questions?