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Bridge owners in Springfield, Oregon, and Hayward, California, US have replaced traditional wood on aging structures with Composite Advantage’s FiberSPAN Fibre Reinforced Polymer bridge decking.
“Both bridge owners were looking for a product with a longer life cycle,” says Scott Reeve, President of Composite Advantage. “The two bridges had different thickness requirements but the design flexibility of our fibreglass products makes it easy to tailor bridge decks to the owner’s specifications without adding cost or installation time.”
Composite Advantage explains that a thinner fibreglass composite bridge deck was used for Springfield’s Rosa Parks Bridge due to the close spacing of its deck supports. The small railroad trestle structure received a 900 sq. ft. FiberSPAN bridge deck with ten panels, 12 ft. by 8 ft. Deck depth was 0.625 inches. It says the decking, built to support a 90 psf live load and a 20,000 lb vehicle, used mechanical fasteners for a deck to beam connection.
The ACFC Bridge in Hayward needed an FRP deck size that could match the thickness of the original wood deck to avoid modifications to the structure’s approaches. Composite Advantage says the new 784sq. ft. deck, with eight panels 12 ft. by 8 ft., was attached to steel truss interiors using mechanical fasteners and U-clips. The fibreglass bridge was built to support a 90 psf live load with an L/360 deflection.
“I chose FRP material because of its durability and skid resistance,” said Mir Ali, City Public Works Engineer for Hayward. “Bridge performance seems fine after its June 2014 installation. It has maintained a really nice appearance.”
Both bridges were installed in 2014 and are beige to blend with their surroundings. Both have been equipped with an epoxy aggregate non-slip coating. Each fibreglass bridge installation took less than one day.
Photo provided by Composite Advantage.
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