• ENGINEERED CONSTRUCTION®

Gerald Desmond Bridge

Long Beach, CA

Project Description

The new Gerald Desmond Bridge will replace the existing through 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.

Owner

Caltrans/Port of Long Beach

Contractor

Shimmick/FCC/Impregilo (SFI JV)

Designer

Arup

Our Role

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. Main span steel erection is unique on this project, and McB has provided specialized never-before-seen equipment to assist in manipulating the bridge geometry and allowing for completion of field splices.

Total Contract Value

$1 Billion +

Timeline

2013 - 2016

Construction Method and Specifications

Approaches were built using a Mobile Scoffold System (MSS). Main span built using deck-mounted derricks, and heavy lift system to lift the steel pier table at the pylon.