The reconstructed Lions' Gate suspension bridge, Vancouver Available to Purchase

A case study is presented of how the entire suspended structure of the 60-year old Lions' Gate Suspension Bridge in Vancouver, Canada, was replaced during 10-hour nighttime closures plus a few longer closures at weekends. The bridge was open to full traffic at other times. Because the new structure was significantly different from the old, and because there was lack of moment continuity at the working front, the design had to consider every stage of construction. Investigations were key to the viability of the project. These included derivation of long-span traffic loads and load factors, and wind-tunnel testing in both smooth and turbulent flow. The main structural details are given. Fabrication and erection are described briefly. The result is a wider, safer, more durable bridge that citizens consider an aesthetic improvement.