THE CONCRETE BRIDGE MAGAZINE

WINTER 2018

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

Issue link: http://www.aspiremagazinebyengineers.com/i/922349

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we know every aspect of the project, and that adds value for them in any type of project." RS&H has worked to stay at the forefront of new developments, and it has seen many changes and advancements. "The segmental bridge industry has been changing rapidly since the early 2000s, as it addresses issues and develops new specifications, new practices, and new technologies," says Barry. "We've had a front-row seat and contributed heavily to ASBI to provide input and ideas. New technologies are developing with almost every project, and plans evolve with those [innovations]." An example is the Interstate 95/ Interstate 295/State Road 9A North Interchange Project in Jacksonville, Fla., a precast concrete segmental balanced- cantilever overpass completed in 2010. "Segmental design and construction was instrumental because its longer spans addressed the difficulty in constructing this overpass over existing roadways and on a tight radius to limit right-of-way acquisition," Barry explains. It was the first structure to require the use of duct couplers for joining post- tensioning ducts at segment joints. This technology was developed during the project and implemented immediately. It has now become a standard in the industry. RS&H worked with the owner (FDOT), contractor (Superior Construction of Jacksonville, Fla.), and post-tensioning s y s t e m s u p p l i e r a s t h e o w n e r 's representative during construction to refine the technology. "It contributed to our role as an industry leader and allowed us to continue growing our segmental experience, helping our clients and expanding our expertise," Barry says. (For more on this project, see the article in the Winter 2011 issue of ASPIRE ® .) Collaboration Is Key A d v a n c e m e n t s a r e a i d e d w h e n stakeholders remain open to ideas and the construction team pools its knowledge and works collaboratively, says Sweeney. "Success depends a lot on how open the owner is to change. FDOT has been very progressive, which helps advance new concepts. When we can bring together the right stakeholders to share ideas and consider possibilities, we get the benefit of a lot of new perspectives." Design-build delivery methods have aided collaboration, but only under the right circumstances. About 15% of the firm's design portfolio features design- build projects. "It's not always the best approach for us," he says. "The key factor is whether we are carrying the proper amount of risk for our level of participation in the project. The sweet spot on design-build for us comes on larger projects with higher construction values. They give us more opportunity to involve more of our resources to drive toward cost-effective solutions in partnership with our contractor teammates." In regard to risk sharing, owners are adding requirements for contractors to accept more responsibility for quality control. "They want to minimize their level of risk factors and bring the contractor into this area more directly," Geiger notes. "As a result, our staff has evolved from doing hands-on testing and inspecting to doing higher- level engineering and providing an observational and advisory function for contractors and owners." A s a re s u l t , R S & H 's c o n s t r u c t i o n e n g i n e e r i n g a n d i n s p e c t i o n ( C E I ) m a n a g e m e n t s t a ff i n c l u d e s m o re engineers. About 45% of the inspection teams are composed of engineers, and 60% of the construction-inspection personnel have engineering degrees. "It has helped us differentiate ourselves because our inspections are done by engineers who understand the design concept and how the end product should perform," Geiger says. "That sets us apart from companies who perform mainly materials testing, as they are performing a different role than what we can provide." An early design-build project for the firm was the Veterans Memorial Bridge in Martin County, Fla., completed in RS&H's first design-build project as lead designer was the 19-span Veterans Memorial Bridge in Martin County, Fla., that crosses St. Lucie Waterway. The project features concrete beams and drop-in post-tensioned spliced girders. 'Environmental and site access issues have become a driving force for using segmental concrete and for concrete in general.' ASPIRE Winter 2018 | 7

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