Mid-1960s - Interstate 65 in Northwest Indiana opens to traffic. The new highway includes interchanges at U.S. 231 in Crown Point and at U.S. 30 in Merrillville.
October 2002 - Crown Point city officials commission a study of the feasibility of building a new Interstate 65 interchange and expect it to point to 109th Avenue as the best location. Merrillville officials vie for 101st Avenue in Merrillville as the optimal site for a new interchange.
June 2005 - The Crown Point commission study shows the best location for a new interchange is 109th Avenue. The decision ultimately rests with the Northwest Indiana Regional Planning Commission and the Indiana Department of Transportation.
May 2006 - Indiana Gov. Mitch Daniels announces the 109th Avenue interchange will be built earlier than expected, thanks to funding of the state's Major Moves highway plan made possible by the $3.8 billion Indiana Toll Road lease. The interchange previously had been scheduled for 2017.
July 2009 - Officials break ground on construction of the interchange. The estimated $17.7 million project is funded from $10 million secured by U.S. Rep. Pete Visclosky, D-Ind., in the 2005 federal highway bill and another $20 million from the Indiana Department of Transportation.
September 2010 - Officials open the 109th Avenue interchange to traffic.