North America - Lehigh Cement Company Lehigh Southwest to Supply Major Benicia Bridge Expansion Project

Lehigh Southwest will supply 65,000 tons of cement over the next 2-1/2 years for the Benicia Bridge expansion project in northern California. Test pours for the substructure began this month. Lehigh Southwest worked with contractor Kiewit to meet Caltrans specifications for concrete temperature and cracking.

Lehigh Cement Company will supply a coarse grind cement from the Redding plant for the substructure of the bridge, then switch to Type II cement from the Stockton Terminal for the superstructure. The Benicia Bridge spans the Carquinez Strait on the northeast end of San Francisco Bay, just north of Lehigh Southwest's Concord office. The Portable Plant used in this project has a rated capacity of 250 yards per hour. It has Cement storage capacity of sixteen loads and four aggregate silos capable of holding 1800 tons/each. They have thirteen concrete mixer trucks on site and two floating "mixer-barges". Four mixers can be driven onto each barge and will float to the desired construction area of the Benicia Bridge, where they will offload into concrete pumping equipment. Concrete construction is slated to begin on April 26th. The first year will supply Coarse Grind Cement from Redding, and the second year will supply Type II cement from the Stockton Terminal.

The photos below were taken from the South side of the portable plant facing the Carquinez Strait. The Benicia Bridge stands closely to the North-West of the plant.

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