Complex sentence: The section of U.S.66 from Wilmington to Joliet was added to the National Register of Historic Places on 5 May 2006, and travels through mostly agricultural land, although the area does contain the Joliet Army Ammunition Plant.
Split into simpler sentences: The section of U.S.66 from Wilmington to Joliet was added to the National Register of Historic Places on 5 May 2006. Alternate Route 66 from Wilmington to Joliet travels through mostly agricultural land, although the area does contain the Joliet Army Ammunition Plant.