313 Blettner offers a modern office campus just minutes outside of downtown Madison. For Sale ($8.08 Million) or Lease. The building is conveniently located along highway 51 to the east and highway 30 to the north. The location allows for effortless highway access and high visibility, with close proximity to the University of Wisconsin - Madison. Multiple large corporations are located in the surrounding area, some of which include Paragon Development Systems, Menasha Corporation, the United States Post Office and others.