Community Corner

O'Fallon Discusses Designs for I-70, Highways K and M Interchange Improvements

Engineers and city staff met with residents on Wednesday to discuss four design options that would help traffic flow.

officials  hosted an open house on Wednesday to share plans for improvements to the interchange at Interstate 70 and Highways K and M. 

Managing Director of Public Works Steve Bender said some of the main problems at the intersection include congestion, which will continue to increase traffic in the future and  intersections that do not function properly when they are too close together. He added another issue with the intersection, is the access on East and West Terra across Highways K and M is restricted because of the heavy traffic.

George Butler Associates was hired in 2009 to conduct an analysis of more than 20 design plans for the interchange, and with the help of city officials, the design plans have been narrowed down to four options for consideration. 

Find out what's happening in O'Fallonwith free, real-time updates from Patch.

Option 11 $7.4 million

  • Grade separated West Terra; diamond intersection
  • Jug-handle connections from Main Street to West Terra
  • Right in and out connections at Main Street
  • Triple left off ramp with additional southbound lane

Option 14 $7.4 million 

Find out what's happening in O'Fallonwith free, real-time updates from Patch.

  • Grade separated West Terra; diverging diamond
  • Jug-handle connections from Main Street to West Terra
  • Right in and out connections at Main Street
  • Triple left off ramp with additional southbound lane 

Option 21 $4.8 million

  • Tight diamond and bowtie round-a-bouts
  • Triple left off ramp with additional southbound lane

Option 22 $3.9 million

  • One-way West Terra Westbound with slip ramps
  • Eliminate West Terra signal
  • Triple left off ramp with additional southbound lane

O'Fallon Project Manager Jeff Schuepfer said the next step is for the city  to apply for funding for the design and construction of the project. Based on the city's analysis and public input, O'Fallon will present a recommendation to the Missouri Department of Transportation. Funding for road projects typically comes from federal, state and county sources. 

Schuepfer said the city will work on funding and design for the next five years and will hopefully begin construction within five to 10 years. 

See the video above to learn more about the design options. 


Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.

We’ve removed the ability to reply as we work to make improvements. Learn more here

More from O'Fallon