A unanimous vote by the Scarborough Planning Board Monday night has cleared the way for Maine Medical Center to invest $59 million in a new Maine Medical Partners building at its Route 1 campus as part of an overall expansion and modernization project.

The 108,000-square-foot, three-story building will be home to Maine Medical Partners practices that include neurology; neurosurgery and spine; ear, nose and throat; rehabilitation medicine and vascular surgery, the Portland-based health care provider said in a news release Tuesday.

Existing facilities on the campus include the Scarborough Surgery Center, Maine Medical Center Research Institute, MMP–MaineHealth Cardiology, the MMP Women’s Health Division of Gynecologic Oncology, the Maine Children’s Cancer Program and MMC Outpatient Imaging.

“This is an important milestone for Maine Medical Center and Maine Medical Partners, and we are very pleased to be moving forward,” Maine Med President Jeff Sanders said in the release. “With this new medical building, we continue to develop the Scarborough campus into a regional center for specialty medical care that is convenient for our patients, with easy highway access, ample parking and state-of-the-art facilities.”

Maine Med said it will begin site work this fall and expects the expansion to be completed in 2021. The project is part of a $534 million expansion and modernization plan for Maine Med in Portland and Scarborough that will create 128 new private patient rooms, add 19 procedure rooms for surgeries and other treatments, provide an additional 225 spaces for patient and visitor parking, and consolidate Maine Med staff parking into one garage.