HIGHWAY 101 IN SANTA ROSA, CA
Concrete Bridge sections are sometime constructed above their final grade to allow traffic to flow under the Bridge during construction. After construction the Bridge has to be lowered 2 to 4 feet to match up with roadway leading to the bridge.
C. H. Bull Company supplied 6-250 ton jacks to create a 1500 ton jacking system. The system included all the pumps, hydraulic hoses, manifolds and gauges. This system allowed the contractor to lower the 4 lane bridge section spanning both the north and south bound lanes of Highway 101 in Santa Rosa in one 8 hour shift.