This $1B design-build bridge replacement project has the highest vertical clearance of all cable-stayed bridges in the United States (US), and is the second tallest cable-stayed bridge design in the US. The Gerald Desmond Bridge accounts for 15% of waterborne cargo movements in the US. It has the highest clearance to accommodate the newest generation of efficient cargo ships.
Group Delta, an NV5 Company, served as the Geotechnical Engineer of Record and Environmental Compliance Manager, providing groundwater contamination characterization, monitoring & modeling; hazardous materials surveys, technical abatement specification design, air monitoring, & contractor observation services. Our team also provided Stormwater Best Management Practice (BMP) inspections and impacted soil management, as well as contaminated soil management.
Added Value
- Seismic and Geotechnical Engineering Leadership: Our team conducted site-specific nonlinear time history seismic analysis for the main span and served as Geotechnical Engineer of Record, reviewing seismic and foundation reports to ensure structural resilience.
- Comprehensive Environmental Oversight: Our team acted as Environmental Compliance Manager and led contaminant plume modeling, groundwater monitoring well installation, and piezometer setup to manage environmental risks during construction.
- Innovative Monitoring and Drilling Solutions: Our team installed and recorded data from 25 vibrating wire piezometers across confined and unconfined aquifers using advanced hollow-stem and rotary drilling methods to support environmental and geotechnical monitoring.
Location:
Long Beach, California
Client:
Shimmick, FCC, Impregilo JV
Project Owner:
Port of Long Beach, Caltrans
Service:
Geotechnical
Environmental
Market:
Ports & Harbors
Project Size: 8,800 Foot Long Bridge
Project Cost: $1.56 Billion
