San Francisco I-280 Joint Hinge Replacement Project

Interstate 280 is a major corridor facilitating traffic in and out of downtown San Francisco. Caltrans maintenance engineers observed the gradual disintegration of hinges on the Southern Freeway Viaduct, a conventionally reinforced box girder bridge built in 1964 and located at the north end of I-280 in the Bay View and Dog Patch Districts of San Francisco. Caltrans went to work in 2014 over major holidays to get the job done with minimal traffic interruptions. Construction contractor, Golden State Bridge Inc. was involved in the project early on, Precision Concrete Materials LLC supplied and distributed the concrete, and Rapid Set Cement was used to ensure quick drying times. With all these players working together Caltrans completed the project ahead of schedule.

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