Placer County – Bowman Road Bridges Improvement Project, Auburn, CA

The bridge work completed, in general, included widening and rehabilitating two existing bridges over Union Pacific Railroad tracks, constructing road approaches; removing portions of two existing bridges; installing carbon fiber reinforced polymer girder strengthening; installing a structure corrosion protection system; installation of micropiles; bridge bent infill walls, pier wall extensions, bridge widening, bridge footings, catcher blocks, polyester polymer concrete, barrier rails, grading; paving; applying signing and striping and erosion control.

Interstate 680 Northbound Ramp Metering, Caltrans #04-4G1134 (Subcontractor to Bay Cities Paving & Grading, Inc.)

This project provides the installation of ramp metering systems for four on-ramps/connectors along I-680 in Alameda County from 0.3 miles south of Scott Creek Road Undercrossing to 0.3 mile north of Alcosta Boulevard Overcrossing from Post Miles (PM) M0.0 to PM R21.9. The structures consisted of two retaining walls, barrier slabs, gore paving and vegetation control.

Rte 80 Bridge Rehabilitation, Fairfield, CA Caltrans #04-3G6904

The project rehabilitated the existing westbound I-80 bridge over Dan Wilson Creek, which was constructed in 1951 and widened in 1961. The existing concrete bridge deck was approximately 57 feet long, 84 feet wide, and 18 inches thick. The top six to nine inches of the existing lightweight concrete on the 1951 deck structure was rehabilitated with a full strength reinforced concrete deck-to-deck overlay, and the 1961 portion of the bridge deck was rehabilitated by removing four inches of the existing concrete deck and replacing it with reinforced concrete. The existing bridge rails were also replaced. Demolition of the top four to nine inches of the bridge deck and portions of the bridge approach slabs was also required.
No substructure or foundation work was necessary, but the 1961 portion of
the bridge was supported by falsework for temporary support during the deck replacement work.

Placer County – Gold Hill Road Bridge Replacement Project

This project replaced the existing bridge which was built in 1930. The profile of the new bridge raised and widened the roadway. The project required a creek diversion and extension roadway construction along with the new bridge structure. The project was completed in one season.

Rte 238/580 Hinge Repair, San Lorenzo, CA Caltrans #04-0H0804

Hinges 12 and 15 of the connector ramp were upgraded under this project. The work required temporary support (40’ tall +/-), bridge jacking, expansion joint replacement, bridge demolition, concrete crack repair, rapid setting concrete placement and traffic control.

Rte 101 Bridge Rehabilitation, Pismo Beach, CA Caltrans #05-1C3704

The Project involves both: work to repair and armor the banks along a 222-foot reach of
Pismo Creek where it flows westerly beneath State Route 101 and its appurtenant
bridges; and construction of new piers to fortify an existing bent supporting the
westernmost of the three bridges. The work included extension dewatering operations of the Pismo Creek for access, wet CIDH and rock socket construction, permanent casings, sheet pile walls, bridge columns, falsework, bent cap construction (with self-consolidating concrete) and pre-stressing concrete.

Golden State Warriors – Chase Center, San Francisco, CA (Subcontractor to Ghilotti Bros.)

Chase Center is an indoor arena in the Mission Bay neighborhood of San Francisco, California. The building is the home venue for the Golden State Warriors of the National Basketball Association (NBA) and occasionally for San Francisco Dons men’s basketball. We constructed over 200 concrete site walls with colored concrete and an architectural finish. The schedule was accelerated in order to meet opening deadlines. Access and coordination challenges were met and overcome for a successful project.

County of San Joaquin, Department of Public Works – Woodward Island Bridge Project, (Subcontractor to The Dutra Group)

The project, located on the Middle River 12 miles west of Stockton, replaced the cable ferry with a new 675-foot bridge to provide uninterrupted vehicle access to Woodward Island from West Bacon Island Road. The seven-span bridge allows unlimited vertical clearance when the removable span is removed and 30 feet of vertical clearance when the span is in place.

The bridge was designed for a minimum design speed of 15 miles per hour and maximum grades of 8.5%. To accommodate the west abutment of the bridge and to provide adequate area for trucks exiting and entering the bridge, the Woodward Island levee road was locally widened by 20 feet and raised by 5 feet at the end of the bridge.

The bridge project was funded through the Highway Bridge Program. The Dutra Group constructed the piles and columns and installed the pre-cast girders. We constructed the abutments, bent caps and deck.

Hwy 1 Bridge Construction to Replace Culverts, Caltrans #04-4S7804

This project, in Olema, CA, consists of replacing existing culverts with a 36’ reinforced concrete slab bridge. The work is in a highly sensitive environmental area which makes the available staging area very constricted. The work will be done in 70 working days and consists of a temporary signal for traffic control, CIDH piling, soil nails, shotcrete, roadway excavation, bridge construction and ST-70 rail construction.