Janssen Contracting has built or fixed hundreds of schools, industrial and commercial buildings in Anchorage and south-central Alaska. The firm specializes in large concrete walls and other buildings that require brick or concrete masonry units. Some of Janssen Contracting s smaller projects include construction of subdivisions and commercial buildings. Its portfolio of larger projects includes dredging in the Port of Anchorage, concrete masonry of The Egan Center and construction of the Loussac Library, Alaska s largest library. Janssen Contracting maintains a location along Post Road in Anchorage.