PROJECT HIGHLIGHTS: GERALD DESMOND BRIDGE
The new Gerald Desmond Bridge will replace the existing though arch structure built in 1968 with a new six-lane, cabled-stayed, signature structure connecting the 710 Freeway to Terminal Island in Long Beach. Additional improvements include reconstruction of the Terminal Island East Interchange, construction of a new interchange with the 710 Freeway and increased vertical clearance over Back Channel to allow larger container ships passage through the Port of Long Beach.
McNary Bergeron is providing construction engineering services, including design of the temporary works and development of the erection procedures required to complete the heavy lifting/lowering of a 1200 ton movable scaffolding system, a specialized piece of construction equipment used to build the high level, cast-in-place approach spans. We are also designing dual purpose, modular steel falsework towers for construction of the 2000 foot cable-stayed mainspan. The 200 foot towers function both as an elevated work platform during heavy lifting of the 500 ton section of structural steel framing erected initially and as stability towers, to anchor the cantilevered backspans, during subsequent portions of the construction sequence.