MoDOT's plan for rebuilding the I-44/Route 13 interchange in Springfield is called a Diverging Diamond Interchange. It's the first of its type built in the USA. The I-44/Route 13 (Kansas Expressway) project is aimed at reducing congestion and improving safety at the interchange.
The Diverging Diamond Interchange will be quicker, cheaper to build than a more conventional interchange project. The I-44/Route 13 interchange project is estimated to cost $2.5 million and construction is scheduled to begin in January 2009 with completion in the fall of 2009.
The Diverging Diamond Interchange design allows the opposing lanes of Route 13 to criss-cross at traffic signals at the ends of the bridge over I-44. Crossing the bridge, oncoming traffic is on the right, separated by concrete barriers and screening.
This will give left-turning vehicles on Route 13 a "free left" to the I-44 on-ramp. At the same time, traffic continuing north or south on Route 13 will be able to travel more steadily THROUGH the interchange.
The links below will help show you how the interchange will work and why MoDOT decided to use this innovative design.
For more information, contact our Springfield District Office at 417-895-7600 or
1-888-ASK-MoDOT (275-6636).
Last updated: June 2008.
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