Located in the Great Smokey Mountains National Park in eastern Tennessee, this project consists of two segmental bridges constructed on the side of the Smokey Mountains. Each bridge contains three spans, for a total bridge length of 470 feet. Pier columns range in height from 100 to 150 feet, and footings are cast-in-place concrete founded on rock.
The original project was designed to be constructed using the precast segmental balanced cantilever method. Due to extremely difficult access on this mountainous terrain, PCL proposed an innovative value-engineering solution that used the cast-in-place balanced cantilever method instead. This approach saved the client $4 million over other contractor proposals, and by utilizing balanced cantilever, this form of accelerated bridge construction (ABC) reduced environmental impacts to the mountainside by minimizing the need for delivery access roads and crane pads.
Bridge Award of Excellence - American Segmental Bridge Institute (ASBI)
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