The Triangle District is bound by 143rd Street to the south, LaGrange Road to the east and the Metra Tracks and Southwest Highway to the west.

Southwest Highway improvements, including a new bridge over LaGrange Road, were completed in 2008.

The intersection of 143rd and LaGrange Road is scheduled for widening and reconstruction that will begin in 2009, with a completion date set for 2011. The intersection of 142nd Street and LaGrange Road, the primary entrance into the site off of LaGrange Road, will be converted to full access with a signal upon completion of the 143rd/LaGrange improvements.