Ascension Seton Williamson hospital and medical center broke ground in Round Rock Thursday on an expansion that will double the size of the facility. The hospital will add a six-story, 216,000-square-foot building at the site, essentially replicating the current facility, and connect the two with a glass-walled common space.

The expansion will create room to add 160 beds to the 181-bed hospital, bringing the total to 341. The new building tower will also have two new operating rooms, an MRI machine, a catheterization lab, and an observation unit.

The new tower will allow an expansion of the emergency room, and 34,000 square feet of the facility expansion will be dedicated to outpatient wound care, cardiac rehab, and pediatric rehab.

Ascension Seton expects a 2026 opening of the expanded facility.