AITKIN, MINN. — Minneapolis-based Kraus-Anderson Construction Co. has begun work on the first phase of a $10 million facility improvement project for the Riverwood Healthcare Center located at 301 Minnesota Ave S. in Aitkin. Riverwood Healthcare Center is a 24-bed critical access hospital with three primary care clinics located throughout Minnesota. The first phase of the multi-year program consists of a $2.2 million MRI addition and Imaging Area remodel. Phase I is slated for completion in June 2009. Services at the facility include surgical, radiology, rehabilitation, cardio pulmonary, specialty clinics and emergency care.