Forty-seven truckloads of concrete were delivered to Pomperaug High School on Tuesday as part of the ongoing reconstruction of the school’s five tennis courts, which have been closed and unplayable for nearly a decade. The $1.4 million project was approved by voters in Middlebury and Southbury last year as part of an $11 million bond package for various districtwide upgrades. R.S. Site and Sports of Oxford is the contractor for the tennis court project. School officials said the new courts have been built using state-of-the art underground cabling to provide just the right amount of tension to ensure no cracking occurs. The new courts will be made of concrete rather than asphalt. Tuesday’s pouring of 470 square yards of concrete was provided by Concrete LLC of Oxford.