Best Rehabilitated Bridge North Torrey Pines Road Bridge Del Mar, Calif.

摘要

The North Torrey Pines Road Bridge in Del Mar, Calif., is a sweeping 550 ft (168 m) long structure situated along the Pacific Coast, crossing an active railroad line. The original structure was built in 1933, and after standing for more than seven decades in the harsh salt air, it was suffering from severe corrosion.The bridge had been classified as structurally and seis-mically deficient, and analyses showed that the majority of the bents and abutments needed to be rehabilitated. Even if the corrosion had been mitigated, the existing columns would not be able to handle large seismic demands without catastrophic failure, says Keith Gazaway, senior engineer for Kleinfelder, the engineer for the project.