AIT Bridges has launched a composite “tub girder,” a U-shaped beam the company says is lighter, lower-cost and longer-lasting than typical concrete and steel girders. COURTESY / AIT BRIDGES AIT ...

The University of Maine’s Advanced Structures and Composites Center successfully tested a rapidly deployable bridge system using composite girders and precast concrete deck panels. The bridge system ...

The California Department of Transportation (Caltrans) is one of the largest state departments of transportation in the nation, managing more than 50,000 miles of California’s highways, or about ...

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 ...

Crews picked concrete precast girders as heavy as 93.5 tons from a deteriorated bridge over the Williams River and transferred them to the first of two Vermont Interstate 91 bridge replacements, ...