On the surface, the span looks like any of the thousands of small, narrow two-lane bridges across America. This new, high-tech bridge in Morgan County, Tennessee uses G/flex® Epoxy in a fiber-reinforced polymer (FRP) composite material deck embedded with fiber optic sensors. It replaced a damaged, decades-old concrete crossing which, like thousands of low-volume bridges across the nation, was structurally deficient and outdated.
According to the American Society of Civil Engineers, about 8 percent of the more than 617,000 crossings in the U.S. are structurally deficient and need repair. FRP composites offer a low-cost, low-maintenance option. The new structure in Tennessee demonstrates the benefits of composite materials for bridgework.
Due to the use of technologically advanced materials, including G/flex, the bridge deck system requires less installation time, conserves energy and construction costs, and has a 100-year lifespan.
"This composite bridge has already made a positive impact on Morgan County," said Highway Superintendent Joe Miller, who added that local officials were looking for a low-maintenance crossing that could be installed fast and at a lower cost than a traditionally built span. "We have numerous bridges within the county and hundreds across the state that are in need of repair and could benefit from this technology."
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Denne historien er fra Winter 2023-utgaven av Sailing World.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
Tips for More Successful Epoxy Projects
That have nothing to do with epoxy mixing or application techniques
Auxiliary Rear Station Build
From past fishing experiences, I've learned that quick changes in speed and direction are often required when retrieving a hooked fish.
TARGETED PERFORMERS
Defending their title at the 420 Youth Worlds in July, Freddie Parkin and Asher Beck were on a roll-until they weren't.
BALANCE ON THE PINNACLE
The path to gender equity in the Olympics has been a long and twisted one, but when the sailors assemble in Marseille next year, we'll finally see what's been a long time coming.
SIMPLE STEPS TO CONSISTENT SPEED
Boatspeed is the magic ingredient for winning races because we can get away with bad decisions if we are fast, but we can't make good choices if we're slow.
THREE-DIMENSIONAL JIB-LEAD ADJUSTMENTS
Floating jib leads give trimmers more dynamic control of the headsail profile.
BETTER TOGETHER
Success over three decades comes down to making it meaningful.
JUSTINE THE MACHINE
This self-effacing Swiss sailor has-in her quiet and understated way become one of the stars of offshore ocean racing in recent years, whether as part of a winning crew in The Ocean Race or building her credentials as a top-class solo racer.
THE MULTITASKING MULTIHULL MOM
Competing in Olympic sailing's most challenging discipline is one thing, but doing so with a tyke in tow takes the campaign hustle to a higher level.
CONNECTED COAST TO COAST
From sunny St. Pete to historic Marblehead, the 34th edition of the Regatta Series linked sailors and friends across the country, with a few new twists.
