MO-DOT Improve I-70 Project

Posted on 08/01/2023

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Earlier this year, Missouri lawmakers passed the largest road construction project in state history. A total of $2.8 billion was budgeted by Missouri Congress and Governor Mike Parson, the campaigner of this project, to rebuild Interstate 70 from St. Louis to Kansas City.

How will the project be funded?

The money to pay for the I-70 project will come from two sources: half of the projected $2.8 billion will come from the current state budget and the other half will come from bond revenue.

How will this project improve Interstate 70 near Warrenton? 

Below is the cost breakdown for the Eastern Rural portion of the I-70 project that runs from Route Z to Warrenton (60 miles), the St. Louis Suburban portion of the project that runs from Warrenton to Wentzville (20 miles), as well as the Columbia portion of the project that runs from Midway to Route Z (13 miles). 

Eastern Rural 

Route Z to Warrenton (60 miles)

Awarded: $31 million

• Mineola Hill Climbing Lanes
  • modot.org/mineola-hill-climbing-lanes-design-build- completed
• Route 19 bridge replacements and interchange improvement over I-70
  • modot.org/missouri-route-19-bridge-replacement-and-interchange-improvement-over-i-70

General Revenue: $796 million

• Add a lane in both directions for 60 miles
• Reconstruct existing pavement
• Construct new bridges
• Reconfigure interchanges

STIP Funded: $13 million

• I-70/ U.S. Route 54 interchange improvements in Kingdom City
  • modot.org/KingdomCityInterchange

Average Daily Traffic: 36,100


St. Louis Suburban

Warrenton to Wentzville (20 miles)

General Revenue: $216 million

• Add a lane in both directions for 20 miles
• Reconstruct existing pavement
• Construct new bridges
• Reconfigure interchanges

STIP Funded: $32 million

• Road realignment from Wentzville Parkway to west of I-64/Rte. 61
  • modot.org/i-70-improvements-wentzville-parkway-route-z

Average Daily Traffic: 81,700

Columbia

Midway to Route Z (13 miles) 

General Revenue: $410 million

• Add a lane in both directions for 13 miles
• Reconstruct existing pavement
• Construct new bridges
• Reconfigure interchanges

STIP Funded: $185 million

• Pavement Improvements within Columbia

• I-70/ U.S. Route 63 interchange improvements
  • modot.org/improvei70Columbia

Average Daily Traffic: 50,100

For the latest Improve I-70 Project updates please visit modot.org/improveI70