Tue March 09, 2021 - West Edition #6 Business Wire The project consists of mining and processing one million cu. yds. of material for the multiple zoned embankment dam. Since no bedrock is present at the site, Sterling will drill more than 13,000 individual cement, deep-soil shafts for the dam footing. Sterling Construction Company Inc. recently announced that its subsidiary, Road and Highway Builders LLC, had been awarded a $135 million heavy civil contract by the city of Los Angeles for the construction of the North Haiwee Dam No. 2 (NHD2) in Inyo County, Calif. The project consists of mining and processing one million cu. yds. of material for the multiple zoned embankment dam. Since no bedrock is present at the site, Sterling will drill more than 13,000 individual cement, deep-soil shafts for the dam footing. Each individual shaft is from 40 to 60 ft. in length and 5 ft. in diameter. The project also will involve the rerouting of the Los Angeles Aqueduct, which supplies clean drinking water to the city of Los Angeles, to allow for the appropriate tie-ins for the dam construction. The project will begin in May 2021 and will take approximately four and a half years to complete.