O'FALLON, Ill. — An expansion project for a surgery center and medical office building at the St. Elizabeth’s Hospital O’Fallon campus will now include an additional $66 million investment for clinical expansion and infrastructure updates, hospital officials have announced.

Hospital Sisters Health System President and CEO Chris Klay and Chief Operating Officer Mike Janis cited the growing demand for inpatient and emergency care in outlining plans for a total $116 million investment during a press conference Monday.

“Our region needs this investment to keep pace with future health care needs,” Klay said. “We’re excited to bring state-of-the-art care to our ever-evolving community.”

Klay said that each year, approximately 9,000 adults and 2,000 pediatric patients travel to St. Louis for c

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