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What's New
The Missouri Department of Transportation will hold a public meeting to discuss how the construction schedule for the Route 141 project and to show the locations of sound walls along the project. In addition, the community will be able to vote on the type and color of the soundwall constructed along the Route 131 project. The public meeting is November 10, 2009, from 4:30 p.m. to 7:30 p.m. at Parkway Central High School, 369 N. Woods Mill Road, Chesterfield, Mo., 63017. MoDOT will also set up a virtual public meeting here, where people who cannot make the public meeting can see the information presented, offer comments about the construction schedule, and vote for their choice of soundwall.
Facts About the Project
When the Route 141 improvement project is complete, it will improve safety and traffic flow, prevent flooding and reduce congestion along Route 141 between Olive Boulevard (Route 340) and Ladue Road (Route AB).
Earlier this year, the Missouri Highway and Transportation commission approved $65 million to complete work on the Route 141 Improvement Project between Ladue Road and Olive Blvd. This work has also been approved by the East-West Gateway Council of Governments and will start in late spring 2010.
MoDOT is working closely with St. Louis County and Maryland Heights on their project to complete the Page-Olive Connector to ensure the two projects work together. MoDOT has allocated money from its share of money from the American Recovery and Reinvestment Act for the Route 141 project. East-West Gateway Council of Governments has programmed approximately $20 million for St. Louis County to complete work on the Page-Olive Connector project. See more information on their project here.
What is the Problem With Route 141 Between Ladue and Olive?
There are three major problems with Route 141 between Olive and Ladue: congestion, safety and flooding. Route 141 was built in the 1930s and cannot handle current traffic. More than 23,000 cars a day use this two-lane stretch of roadway, and several intersections are highly congested. Traffic levels over the next 20 years are expected to increase by up to 35 percent in some locations. Accident rates have risen to nearly double the statewide average, and the road typically floods several times a year.
What is the Proposed Solution?
The current design will construct Route 141 to the east of its current location and turn the current Route 141 into an extension of Old Woods Mill Road. Designers are planning for a six-lane road east of existing Route 141 with two through lanes in each direction along Route 141 between Ladue Road and I-64/Route 40. Right now, engineers are designing single point urban interchanges at Olive Boulevard and Ladue Road.
This will improve traffic flow to the subdivisions and Parkway Central, since this will remove the majority of through traffic from the roadway. MoDOT will also move the Ladue/Route 141 interchange a little further to the east and construct it in a single point design. This design is similar to the Route 141 and Big Bend interchange, where Big Bend goes over Route 141. A single point interchange is controlled by one set of traffic signals located at a single point at the center of the interchange. The signals direct through traffic, as well as all traffic that must turn left to enter or leave the highway.
Why is this the best solution?
After comparing issues such as overall cost, environmental impacts and residential/business impacts, this option best addresses the problems and needs in the corridor while minimizing the negative impacts. This alignment will minimize the overall impacts to residents, businesses, and wetlands while reducing congestion and improving safety. Other options for the Route 141 corridor included reconstructing the roadway along the existing alignment and moving the alignment further to the east. However, these two options would cost an additional $17-25 million to build. Besides cost, the alignment that moves Route 141 further to the east is a less desirable option. It is a longer, less direct route than the preferred alignment with several curves that makes it less than desirable.
Where Does the Project Stand Today?
In December 2002 the Federal Highway Administration approved the Environmental Assessment document for the Route 141 widening project between I-64/Route 40 and Olive Boulevard. In January 2002 the Missouri Highways and Transportation Commission approved the preliminary design and location of Route 141 from south of Ladue Road to north of Olive Blvd. The project has been funded, using American Recovery and Revitalization Act money.
Estimated Project Costs:
- Estimated construction costs to improve Route 141 between Olive and Ladue: $60 million
- Estimated cost to purchase right of way for the project: $35 million
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Project Timeline
This project is currently in design – construction on the project will begin sometime in late spring 2010. Once construction starts, the project should take about two years to complete.
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Route 141 Maps and Information
View a high-resolution version of the Route 141 Project map using Adobe Acrobat Reader: Route
141 project map (1.17 MB)
Construction schedule (31.3 Kb, pdf)
Typical section (a cross-section of the road) (56.6 Kb, pdf)
Route 141 relocation north half (Olive Blvd. intersection) (5.61 Mb, pdf)
Route 141 relocation south half (Ladue Road intersection) (4.36 Mb, pdf)
The next two videos show the originally proposed intersection of Route 141 and Ladue Road and the intersection which will be constructed. As MoDOT continued to look at the traffic patterns and the expected increases in traffic, the intersection with the roundabout was not the most effective way to move traffic through this intersection.
Traffic model of original Ladue Road intersection (with roundabout) (12.3 Mb, wmv)
Traffic model of new Ladue Road intersection (12.3 Mb, wmv)
Overall aerial view (1.76 Mb, pdf)
Route 141 fact sheet (461 Kb, pdf)
Route 141 and Ladue looking west (1 page, 314 kb)
Route 141 and Ladue looking east (1 page, 317 kb)
Route 141 and Ladue looking north (1 page, 215 kb)
Route 141 and Ladue looiing south (1 page, 267 kb)
Route 141 and Ladue and Green Trails (1 page, 222 kb)
The Missouri Department of Transportation held an open-house style public meeting to discuss this project May 14, 2009 from 4 to 8 p.m. at Parkway Central High School, 369 N. Woods Mill Road, Chesterfield, MO, 63017. Attendees raised a number of common concerns -- you can read those concerns, and MoDOT's responses here.
The following are presentations given to the Community Advisory Group:
June 23, 2009 - Initial CAG meeting (351Kb, pdf)
Aug. 12, 2009 - CAG meeting (1.6Mb, pdf)
Sept. 28, 2009 - CAG meeting (3.67 Mb, pdf)
Route 141 Environmental Assessments
Final Route 141 EA - December 2002 (39.3 Mb, pdf)
Route 141 EA Re-evaluation - March 2009 (580Kb, pdf)
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Route 141 Summary of Impacts
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Send Us Your Comments
For comments or questions about the project, please e-mail MoDOT Project Manager Tom Montes de Oca or MoDOT Area Engineer Karen Yeomans.
If you would like to be added to a mailing list about this project, please e-mail us.
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