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What's New
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| Crews place asphalt on a stretch of Ladue Road. This section of roadway will connect to the new Route 141. Click the photo for more pictures from construction on the Route 141 project. |
Here's what you can expect over the next few months on the Route 141 project:
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Traffic has moved to the new lanes of Route 141 between the hospital and the Parkway Central Campus. Drivers can to access the eastern portion of Ladue Road from both northbound and southbound Route 141.
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We have closed Woods Mill south of Ladue Road. Residents in the Green Trails subdivision will be able to travel north on Woods Mill Road to the traffic signal at the Parkway Central campus (just as they are able to now.) They will be able to access southbound Route 141 there. We will post a detour map of the above switch on our Route 141 page and on Facebook.
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Residents of the homes on Woods Mill south of Green Trails will have limited access to their homes.
- Traffic has also moved onto the new Olive Boulevard bridge. Although traffic has been restored to five lanes, roadwork continues on the side of the bridge. Traffic speeds are also set at 30 mph still for the stretch of Olive in the work zone.
Crews continue to construct some of the bridges and roadway on the project.
MoDOT and its contractor are making every effort to minimize the environmental impact to the project both during construction and when the project is complete. Crews are only removing those trees needed for construction, and those trees are being recycled from mulch, erosion control and ground cover. Additionally the department is using several environmentally friendly techniques during construction, and is analyzing several others for potential use throughout the project.
MoDOT broke ground for the relocated Route 141 project in west St. Louis county on March 15, 2010. Crews from Fred Weber Inc. are ready to start construction work on the $44.5 million project to relocate Route 141 to the east, raise the roadway out of the flood plain, improve traffic flow and reduce congestion. Work on the project will continue until summer 2012.
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).
In 2009, 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 started in 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. Drivers will access the relocated Route 141 at 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 is building the Ladue/Route 141 interchange a little further to the east, using a design similar to the Route 141 and Big Bend interchange, where Big Bend goes over Route 141. This single point urban 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. Work on the project has started, and is expected to be complete by summer 2012.
Project Costs:
- Estimated construction costs to improve Route 141 between Olive and Ladue: $45 million
- Estimated cost to purchase right of way for the project: $35 million
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Project Timeline
This project is currently under construction. We expect the project to be complete in September 2012.
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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)
Construction staging (22 pages, 1.33mb)
Typical section (a cross-section of the road) (56.6 Kb, pdf)
Overall project (1.2 Mb, 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 (1 page, 469 kb) )
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 looking 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)
Nov. 17, 2009 - CAG meeting (3.66 Mb, pdf)
Aug. 11, 2010 - CAG meeting (2.94 Mb, pdf)
Dec. 2, 2010 - CAG meeting (1.73 Mb, pdf)
March 31, 2011 - CAG meeting (1.26 Mb, pdf)
Aug. 23, 2011 - CAG meeting (14 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 Michelle Voegele.
If you would like to be added to a mailing list about this project, please e-mail us.
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