Orange County Branch Newsletter
ASCE OC T&DI
ASCE OC T&DI - Gerald Desmond Bridge
By Charlotte Wu, PE, ENV SP, STP | T&DI Committee - Secretary
The Orange County Transportation and Development Institute (T&DI) held its first 2021 technical presentation on October 12th over Zoom with guest speaker Duane Kenagy, the Capital Programs Executive from the Port of Long Beach. Mr. Kenagy gave a presentation about the recently completed Gerald Desmond Bridge Project, Bridge to Everywhere. Read on for highlights of the presentation.
Port of Long Beach and Port of Los Angeles combined are currently ranked the 9th largest port complex globally. The Port of Long Beach developed the Gerald Desmond Bridge project in collaboration with Caltrans, LA Metro, and the US Department of Transportation. The bridge is the first cable-stayed vehicular bridge in the State of California. The project provides additional 50 feet vertical clearance over the Port of Long Beach Back Channel, bringing total vertical clearance to 205 feet. The construction of the bridge started in 2013 and was completed in 2020. One of the innovations used in the project includes the use of a Movable Scaffolding System (MSS), which allowed for more efficient and safer bridge deck construction and minimized impacts to the areas below the bridge. The MSS units were attached to bridge columns, which provided the formwork for workers to install the rebar and place the concrete. Once a bridge span was completed, the MSS then glided over to the next column for the construction of the next span. The presentation highlighted other key features, like the stay cables and composition of the pylons, and discussed key benefits of the bridge. The project also included a Class I bikeway, a facility with exclusive right of way for bicyclists and pedestrians, away from the roadway and with cross flows by motor traffic minimized. The Gerald Desmond Bridge will transform the Ports and the community for many decades to come.
About the Author
Charlotte Wu is a Transportation Engineer with AECOM. Charlotte is passionate about designing transportation project that improves the quality of life while maintaining a balanced and sustainable community. Outside of work, she enjoys outdoor activities such as running, snowboarding, and riding. Charlotte can be contacted at [email protected].