Structural health monitoring of I-10 twin span bridge : [tech summary].

PDFTech ReportState Project No. 736-99-1437LTRC Project No. 07\uc2\ubf1ST/08-3GTStructural health monitoringHighway bridgesLoad testsPiles (Supports)Bridge piersPrecast concretePrestressed concreteStrain gagesBending momentsInclinometersLouisianaLouisiana Transportation Research CenterAbu-Farsakh, MuradLouisiana Transportation Research CenterUS Transportation CollectionA new I-10 Twin Span Bridge was built over Lake Pontchartrain between New Orleans and Slidell, Louisiana to replace the old bridgethat was seriously damaged from the storm surge associated with Hurricane Katrina (Category 3) that hit the southern part ofLouisiana in August 2005. It was designed with higher capability to withstand extreme events such as hurricane storm surges andship impacts. The new bridge is around 5.4-miles long located 300 ft. to the east of the old bridge with an elevation of 30 ft., 21 ft.higher than the old bridge, and an 80-ft. high-rise section near the Slidell side to allow for marine tra\uef\uac\u192 c, making it less susceptible tohigh storm surge. The bridge consists of two parallel structures with three 12-ft. travel lanes and two 12-ft. shoulders on each side (60ft. wide), allowing for a 50 percent increase in the tra\uef\uac\u192 c volume. Some piers of the new bridge are supported by precast pre-stressedconcrete (PPC) batter pile group foundations