The Portland office of Consigli Construction Co., Inc. has been awarded a $5.6 million library renovation and addition project from the Maine Historical Society (MHS) at its 485 Congress St. headquarters. Built in 1907, the library is listed on the National Register of Historic Places. The Nichols Hall addition will be torn down to make way for new construction. In its place will be a glass-and-brick structure providing storage space for MHS's collections, making temperature and humidity control of importance throughout the construction. When finished, the MHS Library will gain an additional 11,000 s/f of space over its current capacity of 13,000 s/f. Consigli will perform several aspects of the project, including: concrete, building underpinning, and masonry and mosaic tile restoration. The project, designed by Schwartz/Silver Architects of Boston, is targeting a January 2009 completion date.