Missouri Route 109 Widening: What's the Plan?

Part 1 of 2: Wildwood and Missouri Department of Transportation officials hosted an open house Wednesday at Wildwood City Hall to gather feedback regarding major plans that include increasing Route 109 from two to four lanes in future.

Authorities indicate the stretch of roadway on Missouri Route 109 between Missouri Route 100 and Clayton Road historically has the most number of crashes annually within . A proposed, major highway construction project was designed to improve the safety and flow of traffic there, but many Wildwood residents questioned whether a recommended two-lane roundabout was the right way to go at Wednesday evening's open house about the project hosted from 4 p.m. to 7 p.m.

"The accident rate on this stretch is about twice that of other similar roads in Missouri, and twice what we like to see," said Missouri Department of Transportation area engineer Michelle Voegele, at the open house.

Approximately 20,000 vehicles travel through this road daily, according to transportation studies.

Missouri Department of Transportation (MoDOT) and Wildwood officials partnered to fund the joint project that will:

  • Widen Missouri Route 109 to four lanes (two in each direction) from Route 100 to Clayton Road
  • Create a raised center median island
  • Establish a modified two-lane roundabout at the intersection of Route 109 and Pond-Grover Loop Road
  • Include a western extension to Pond-Grover Loop Road
  • Install two pedestrian tunnels to improve the safety of pedestrians and tie into the existing and future trail system for this area.

The last open house was held in Wildwood during December to introduce the conceptual project plans and get reactions from citizens. That exchange and some engineering analyses resulted in the following updates to the plans:

  1. The intersection of Eatherton Road and Route 109 has been relocated to the south to provide some separation from the new roundabout at Pond-Grover Loop Road.
  2. A second roundabout was added at the intersection of Route 109 and the westbound on/off ramps at the north side of the bridge over Route 100. MoDOT engineers believe this will help transition the traffic flow better at the south end of the project, and provide a safer alternative for traffic currently turning left out of Windsor Crest Subdivision.
  3. The entrance to a new six-lot residential subdivision, Lafayette Crossing, across from , has been incorporated into the plans.
  4. More detail of the planned stormwater retention pond at the southwest corner of Route 109 and Pond-Grover Loop Road was incorporated into the plans.
  5. The necessary right-of-way and easements for the project have been shown.

Many subdivision residents will no longer be able to turn left from their subdivision's entrance onto Route 109 when the project is completed. These turns will be replaced by right turns accessible through new roundabouts.

MoDOT engineers indicate more areas than contained in this plan may need to be addressed to truly limit the impacts of congestion along this stretch of Route 109, however those projects could only be done when and if funding becomes available.

Schedule for Widening of Missouri Route 109 Project, per MoDOT:

Design completed January 2013 Contractor awarded April 2013 Construction to begin June 2013 Construction completed Summer 2014

ScottRAB September 10, 2012 at 08:00 PM
The FHWA has a video about modern roundabouts that is mostly accurate (http://www.youtube.com/watch?v=uhHzly_6lWM ).
Don December 18, 2012 at 03:48 PM
Round-a-bouts serve only to slow traffic and will bring 109 to a crawl during high volume periods. I've never ever felt safe navigating through one and I've been driving 50 years. I my younger days, they were taking them out in favor of safer designs. When the round-a-bout madness is over, they'll be taking these out too. Who's going to yield - who's going to go?!!! The highways are full of impetuous drivers today who drive as if they're the only ones on the road. Every time one of them enter a round-a-bout, everyone else is in danger. Beware!!!!!!!!!
KCF Resident December 19, 2012 at 05:11 PM
Exactly, sorry for the unprofessional comment...but anyone who favors Round-A-Bouts is a "meathead." When will they learn? Your explanation could not be more accurate. I'm glad I don't have to travel that road area much. All the county is doing is filling some construction company's pockets and wasting our tax dollars.
Dan Busse December 20, 2012 at 01:56 AM
I agree. Hey MODOT engineers, show me stats where a stretch of highway with a higher than normal accident rate DROPPED because of the incorporation of a new roundabout. Don is right. They'll be ripping these out in a few years. MAYBE the stats are because that piece of highway is right along the high school, which has a preponderance of INEXPERIENCED DRIVERS. How many millions did we spend on the silly variable speed limit signs on I-270? That lasted what, 2 years? Bet nobody got fired over that debacle, either!


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