Nearly 500 cement trucks filed onto the Sharp Chula Vista Medical Center campus in Chula Vista, Calif., overnight on Saturday, July 29, to pour the base of Sharp HealthCare’s newest hospital, set to open in fall 2019.

The concrete pour marks the most recent milestone—and almost halfway point—for the South Bay’s first new hospital in more than 40 years (the last new hospital was the existing hospital at Sharp Chula Vista, which opened in 1975).

Sharp Chula Vista broke ground on the $244 million hospital in November 2016; once open, it will add 138 private patient rooms, six operating rooms, a rooftop café and more to meet the needs of San Diego’s South County region—one of the fastest-growing in the nation. The project is Sharp’s largest single investment to date.