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Geographical Challenge The two-lane curving bridge’s single lanes gently curve through a deep valley over the river and forests, some 55 m above ground level at the bridge’s highest point. Based on a ...

Engineering researchers at The University of Alabama are testing massive concrete girders in a campus laboratory to find ways for bridges to span longer distances with fewer supports underneath.

Florida agencies are embracing a trapezoidal, curved precast-concrete girder design, used in Colorado more than a decade ago, and Pennsylvania recently has adopted standards for its use. A ...