Urban Highways: Freeway or Expressway

Kansas Expressway Diverging Diamond

Honorable Mention

State Route 13, Kansas Expressway,
Diverging Diamond Interchange
Springfield, Missouri

The nation's first diverging diamond was built to alleviate congestion on the heavily-traveled Kansas Expressway while providing a unique pedestrian/bicycle crossing down the middle of the bridge. The innovative design was used because it could be built in less time than a more traditional interchange reconstruction, would cost much less, and would reduce crashes during and after construction.

• Designer: Missouri Department of Transportation
• Contractor: Hartman and Company, Inc.
• Owner: Missouri Department of Transportation