Work has begun on a $61 million renovation of a north Alabama hospital.

Once completed, the main entrance to Marshall Medical Center South in Boaz will be relocated to the north end of the hospital, adding 125 parking spaces.

WHNT-TV reports the ground floor of the expansion will house a cafeteria, coffee shop, conference room and gift shop. The second floor will house a check-in and consultation room for outpatient surgeries and the third floor will include an 18-bed intensive care unit and 32-bed inpatient section.

Hospital officials said state approval for some parts of the expansion awaits state approval.

Part of the project also includes a medical mall linking the expansion to the existing physician office building, with room for future clinic and office space.

Work is expected to be complete in about three years.

The hospital is one of nine controlled by the Huntsville Hospital Health System.