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Route W & MM Study

Purpose & Need

Route MM

  • Safety and Localized Congestion
  • Numerous curves, inadequate shoulders, poor sight distance
  • Crash and fatal crash rates 3 times state average (all 2-lane roads)
  • Projected year 2020 traffic exceeds capacity of planned safety improvements to existing
Route W
  • Safety and Flooding
  • Numerous curves, inadequate shoulders, poor sight distance
  • Crash rate in Jefferson County section 1.7 times state average (all 2-lane roads)
  • Short periods of closure due to flooding of Big River
Recommended Locally Preferred Alternative (LPA)

Route MM
  • New 4-lane road to the south of existing Route MM at Route 30 to just east of Heads
  • Creek Road with a 4 lane Route MM from that point to Route 21
  • New road to have narrow median, and access management controls
  • Safety improvements to the existing Route MM
  • Modification to some hills and curves, addition of turn lanes and access controls
Route W
  • Safety improvements to the existing Route W
  • Modification to some hills and curves, addition of turn lanes and access controls
  • Turn lane locations: Twin River Rd., Winnifred Rd., White Oak School Rd. and Byrnesville Rd.
Cost

  • Total cost estimates for the Route W and Route MM Final Alternatives ranged from $34 million to $115 million (yr 2007 dollars)
  • Route MM est. new alignment cost $74.7 million
  • Route MM est. improvements to existing roadway cost $13.7 million
  • Route W est. improvement cost $14.1
What's Happening?

The results of the study have been approved by the East-West Gateway Council of Governments and are now part of MoDOT's Long Range Transportation Plan.

Need More Information?

  • Call MoDOT toll-free at 1-888 ASK MODOT (275-6636)
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