The seven-span, four-lane, precast prestressed voided slab bridge is 460 ft long with a typical span of 67.5 ft. The 4 ft precast voided slabs were erected using 100 ton crane. The adjacent decked beams were joined together with a key mortar joints. Cast-in-place concrete topping was used and as a result tie rods were not used on this project. The structure is supported on twelve-150 ton circular driven concrete pile extensions per bent.

Fourteen-foot wide raised median was installed on Thunder Valley Sunset Bridge as part of this project.  The project includes the installation of a 16-inch water line on brackets at edge beam with inserts.

Year completed: 2006

Cost: 5,000,000

Contractor: Perini

Owner: County of Sacramento

The design challenges included: The voided slabs were joint together with cast-in-place concrete closure pour with interlocking reinforcing bars and strands above the invert cap. Environmental and Hydraulic issues.

Agencies: MRO Engineer, Placer County, Perini, DMJM

References