Navistar employees look on during an opening ceremony for its new Midwest Parts distribution center in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
The inside of Navistar's new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar employees l-r, Charles Lester, Parts Distribution Center Manager; Dan Ustian, Chairman, President, Chief Executive Officer, Navistar, Inc; Phyllis Cochran, President, Navistar Parts and Joe Kory, Vice President, Global Distribution, laugh after a ribbon cutting inside its new Midwest Parts distribution center in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar's new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar employee Mike Kurek, right, sorts items inside its new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar employee Mike Urso, center, sorts items inside its new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar employee Richard Parkman, center, sorts items inside its new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Dan Ustian, Chairman, President, Chief Executive Officer, Navistar, Inc speaks inside its new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar employee Mike Kurek, uses a wrist mounted RF unit for orders inside its new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
A Navistar employee sorts items inside its new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
Navistar's new Midwest Parts distribution center during an opening ceremony in Joliet, IL on Monday June 11, 2012. | Matt Marton~Sun-Times Media
JOLIET — Keep those trucks on the road. That was the message Monday at Navistar’s celebration of its new 860,000-square-foot Midwest Parts Distribution Center in Joliet. In Will County, so many distribution centers have opened in the past decade that the arrival of another one …