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Workers use a 30-ton crane to erect the first hybrid-composite beams for the High Road Bridge.
PCA

For all classes of roads or highways, reinforced and prestressed concrete bridges have a significantly lower rate of structural deficiency than steel bridges, according to a Portland Cement Association analysis. Material Usage and Condition of Existing Bridges in the U.S. reports that 72,749 of the U.S. bridges studied were structurally deficient. More than half of the deficient bridges were built with structural steel. For more on the publication, visit www.cement.org/bookstore.