Du Page County Highway 31 is a east-west highway in southern Du Page County. It has three sections in the county. The first runs from the Cook/Du Page County Line to 83rd Street, along Plainfield Road. DPCH 31 follows 83rd Street from Plainfield Road to Lemont Road. The along 87th Street/Boughton Road from Lemont Road to the Du Page/Will County Line.
A busy sign assembly at the Will/Cook County Line.
Western end marker at the Will/Du Page County Line.
Looking east along DPCH 31 as it intersects with DPCH 56.
EB DPCH 31 in Darien.
A end marker on EB DPCH 31 at Lemont Road.
The begin marker for DPCH 31 for the 83rd Street section at DPCH 9.