Bridge Strengthening and Rehabilitation

Libro: Bridge Strengthening and Rehabilitation
Autor: Petros P. Xanthakos
Editorial: Prentice Hall PTR

Categories: ,

The national age distribution of bridges indicates a growing replacement need for facilities constructed in the 1930s and earlier, and a parallel need for improvement options for bridges built during the interstate period. According to recent reports, of the nations 577,000 bridges, about 40 percent are found structurally deficient or functionally obsolete. Deficiency is a performance element that is at or below a specified minimum level, generally established from a consensus of technical expertise within the engineering discipline. Deficiencies in the bridge system are identified in a variety of physical and operating problems such as poor pavement, high levels of congestion and riding discomfort, lane and shoulder widths not meeting current standards, inadequate load capacity, compromised safety, and other related conditions.