The ideal location for Professional and Medical Office Space in Downtown Lowell. Gateway Center I is known as one of downtown Lowell’s most prestigious buildings and offers a range of spaces between 1,069 and 4,391 SF. With convenient access to the Lowell Connector, major highways, and city parking lots, Gateway I is the perfect location for professional and medical offices. With on-site management and ample parking, Gateway I presents an exceptional leasing opportunity featuring great lighting, new windows, and stunning views of the downtown district. Lower level storage space is also available.