Missouri Route 109 Widening Among New MoDOT Road Construction Projects

The projects cost nearly $211 million, and will include road and lane closures around the St. Louis area that begin next week.

Missouri Department of Transportation (MoDOT) crews have a busy year planned for road construction in the St. Louis area.

Tuesday, MoDOT officials unveiled detailed plans for five major projects around the St. Louis area in 2013 that total nearly $211 million. 

"So it's a significant amount of money we're about to spend on roads around the state, around the region," said Ed Hassinger, MoDOT District Engineer for the St. Louis region.

Details for another project along Interstate 70 in St. Peters at Mid Rivers Mall Drive will come later this year.

Hassinger said because of the mild winter, crews worked late into 2012, and 2013 construction projects will begin early this year.

Following are the projects MoDOT have planned. Hassinger said drivers can expect road and lane closures as these get under way.

"This is the time to kind of gauge your route," Hassinger warned drivers. He said it will simply make drivers' lives a lot easier if they take alternate routes.

Wildwood Route 109 Widening - $7 Million

MoDOT and the City of Wildwood officials are working together on this project aimed at improving the safety and traffic flow along Missouri Route 109 from Clayton Road to Missouri Route 100. Construction is set to begin late summer or early fall 2014. 

Hassinger said people need to watch for one-way traffic and the work being done on off-peak hours.

Route 109 will be widened to four lanes and roundabouts will be added to the Pond-Grover Loop Road and at the westbound Route 100 intersection. 

Resurfacing work also will take place from south of Route 100 to the Meramec River beginning in coming weeks. This will create daily lane closures.

Interstate 270 Southbound - $12 Million

"We finished the work northbound. The initial reports are really good. We've improved congestion," Hassinger said.

Northbound I-270 between Dougherty Ferry Road and Interstate 44 has expanded to five lanes. Now it's time to do the same to southbound I-270 in that area. Lane closures are expected in the southbound lanes between Manchester Road and I-44 beginning in late February. They'll take place during non-peak traffic hours.

Hassinger said the goal is to alleviate evening rush hour congestion along I-270 in this area.

Interstate 70 Blanchette Bridge - $63 Million

Hassinger said I-70 is down from five lanes in each direction to three lanes in each direction while crews work to build a new bridge over the Missouri River. Construction is expected to be completed in fall 2013. 

Highway 40 Daniel Boone Bridge - $111 Million

Construction begins in January on the new bridge that will replace the current westbound bridge. Hassinger said there will be lane closures during off-peak hours and a few weekends during the construction which is expected to last three years. Rock blasting will also begin on the St. Charles side of the bridge in February. Westbound Highway 40 lanes will also narrow later this year.

"Not a lot of impacts there, but the project is on track and we're moving at a fairly fast pace," Hassinger explained.

The new bridge is set to open late 2014. 


Highway 40 at the Tower Grove - $17.9 million

MoDOT has partnered with BJC on this project because it willl improve access to the BJC campus, which Hassinger said is the largest employer in the St. Louis area. The project will close Highway 40 in both directions beginning Jan. 25. The project will replace the four overpass bridges on Highway 40, east of the Kingshighway exit. Two of those bridges, Taylor Avenue and Newstead Avenue, close next week, but there will be Highway 40 lane restrictions throughout the project.

"So big changes in how traffic moves in that area. People need to be aware of that," Hassinger said. He said drivers should use alternate routes, including I-44, I-70, Manchester Road and Forest Park Parkway.

Hassinger said $9.75 million for the project is coming from BJC and the Washington University Medical Center.

Interstate 70 at Mid Rivers

A project at Mid Rivers is coming. The project hasn't yet been awarded, but is expected to be awarded in February and MoDOT will release more details in coming months.


David Weihe January 17, 2013 at 10:16 PM
The extra lanes will be great. The two roundabouts on this road I'm not sold on yet.
Southern Gent January 21, 2013 at 04:39 PM
You should refer to "Highway 40" as I-64, thus alleviating some potential for confusion. For example, my GPS refers to it as I-64. While I get it since I've lived here almost 5 years, I do remember some initial confusion when speaking with natives.
Marc Perez January 21, 2013 at 04:50 PM
Good point Southern Gent. Old habits die hard. Our Football team used to be the Cardinals, and w eonce had a baseball team "Browns".... If you didn't go to high school here you probably don't know how bad we can be. The once three lane road, once Olive Street Road that ran through what is now Chesterfield Valley was an icon for decades. It has a middle "suicide lane" for those in either direction who wanted to use it as a passing lane. The good olde days are long gone and as you pointed out, so is highway "40".
Julie Brown Patton January 21, 2013 at 04:54 PM
Point taken. Missouri Department of Transportation managers also sometimes use the phrases interchangeably. I always try to reference Missouri Route 109 as such, not Highway 109, for same reasons. It's Missouri Route 100, too, not Highway 100. But it all gets shorten in our verbal conversations, I guess.
Wm. J. Pattison April 30, 2013 at 04:51 PM
You think this will be a mess. Jeff. County Planning & Zoning just approved building an apartment/gas station complex in a flood plain at the other end of 109 & W with 3 driveways from 109 to the bridge into Eureka - accidents waiting to happen! During the last rain the water was approx. 12 inches from going over 109. We employee these people to work for us? 3


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