Ballard Bridge Seismic Retrofit, Phase II

Location: Seattle, WA

OCI was contracted to monitor water quality and collect, test, and report on water samples for the Ballard Bridge Seismic Retrofit Project. OCI recorded testing locations on a Water Quality Monitoring Map, and provided daily and monthly summary field reports on water quality during in-water construction. The project included retrofitting of the existing Ballard Bridge approach structures, column jacketing, reinforced concrete seat extensions, reinforced concrete restrainers, reinforced concrete plinth retrofits, reinforced concrete pier diaphragm bolsters, reinforced concrete girder strengthening, replacement of longitudinal restrainers, addition of steel longitudinal blocking, addition of steel deck joint restrainers, replacement of knee bracing with steel pier diaphragms, and bridge lighting system upgrades.