Your Bridge Partner. Creating the Future.
Proud sponsors of the 2022 International Bridge Conference, our team is delighted to see our bridge design industry colleagues and friends in person once again! We invite you to attend one of Gannett Fleming’s engaging professional development presentations, where we’ll share stories of how we partnered with clients to create a better future, together.
We hope you’ll join us in Pittsburgh for this highly educational program!
Pictured above: Accelerated Bridge Construction for Metra’s Bridge Z-100 over the Fox River | Elgin, Ill.
Join Our Presentations
IBC 22-21: Fatigue Testing in Negative Moment Region of a Continuous Stringer Bridge
Tuesday, July 19, 2022 • 8 a.m. EDT • Track: Load Testing & Instrumentation Session
This case study presentation focuses on the Pennsylvania Department of Transportation (PennDOT) SR61-10B bridge approach spans, which are two-span continuous, non-composite, multi-stringer bridge structures. Fatigue life at the end of the top flange-welded cover plates had been exceeded. Through fatigue and load testing, we determined that the fatigue life was not a concern due to unintended composite actions between the deck slab and stringers. Since the deck in the negative moment region was in tension, we also studied the behavior of concrete in tension. Join Gannett Fleming, PennDOT, and Specialty Engineering for an informative case study that will increase your bridge structure knowledge.
IBC 22-12: Using ABC Techniques and Innovative Design Details to Overcome Site Access Challenges
Tuesday, July 19, 2022 • 11 a.m. EDT • Track: ABC, Part 1 Session
We’ll discuss the innovative bridge design standards and details, as well as the accelerated bridge construction (ABC) techniques that successfully erected the 555-foot, four-span superstructure of Metra’s Bridge Z-100 over the Fox River in Elgin, Illinois. The project’s challenges included adjacent upstream and downstream bridges, overhead high voltage lines, an overhead highway bridge, and river geometry significantly constraining construction access and working space. Our team employed innovative bridge design and ABC techniques to mitigate access limitations and optimize construction operations, reducing construction costs and rail disruptions. This professional development session is a joint presentation with our partner, TranSystems.
IBC 22-68: Advancing Foundations: Augered Cast-in-Place Bridge Foundations
Wednesday, July 20, 2022 • 11 a.m. EDT • Track: Foundations Session
Augered Cast-in-Place (ACIP) piles are prevalent in vertical structures, while transportation and bridge structures have been slow to adopt due to AASHTO not addressing their design standards. The Ohio Department of Transportation (ODOT) used 176 ACIP piles in a 217-foot-long pier footing, requiring battered, reduced and low headroom, and phased installations within a highly charged aquifer. Presented by Gannett Fleming and our partner, GRL Engineers, this professional development presentation will provide an overview of the STA-77 Bridge design project, including geotechnical design, structural design, installation process, and testing, and present lessons learned from this first-of-its-kind foundation for ODOT.