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I-64 Interchange Reconstruction at Tower Grove


Installing fence on Boyle
Crews install the bridge fence on the Boyle bridge. Click here for more photos


MoDOT is continuing constructionon a new I-64 interchange at Tower Grove. The bridges at Boyle and Tower Grove over I-64 have closed. This project, done in partnership with BJC HealthCare and Washington University in St. Louis, is intended to improve the flow of traffic around Kingshighway and into the medical campus. Some utility relocation concerns have delayed completion of this project.

How does this construction project impact I-64 Traffic?
MoDOT will keep three lanes open on I-64 in both directions from 5 a.m. to 7 p.m. weekdays.. Overnight, drivers can expect lane closures with at least one lane open at all times on I-64 in both directions.

Lanes on the interstate will be narrowed and shifted throughout the project. Currently, the bridges at Newstead and Taylor have been completed, and crews are currently working on the bridges at Tower Grove and Boyle. Tower Grove and Boyle will be closed across I-64 for three months . While Tower Grove and Boyle are closed, the westbound ramp at Boyle will be closes April 7 for a month, reopening in mid-May. There are also ramp closures at Vandeventer, in both directions, during this project.


What should I-64 commuters do?
Lanes though the project will be shifted and reduced to 10 feet, which will create congestion during morning and evening rush period. If possible, drivers who use this stretch of I-64 for their commute should consider using alternate routes -- for instance, drivers can use I-44 or I-70 to travel between the city and western St. Louis County. Commuters who live on either side of the project can use Forest Park Parkway and Manchester/Chouteau to avoid congestion. They may also consider checking with their employers on telecommute options or shifting their working hours. Reducing peak hour traffic by 10 percent should help reduce congestion and slow downs through the work zone.

You can view congestion at I-64 and Tower Grove on MoDOT's Gateway Guide. The I-64 and Tower Grove camera is available by selecting it directly from the overview map, or you can select the camera by clicking on the "Select a Camera" dropdown box and selecting the "I-64 @ Tower Grove Ave" camera -- currently the second on the list.

Construction outlook

Here are the current impacts of construction on the I-64/Tower Grove interchange project.

 Information on this chart may not be updated in real time -- for real time traffic conditions, please see MoDOT's Gateway Guide.

Roadway Impact Projected change
I-64 eastbound Open Complete
I-64 westbound Open Complete
Taylor over I-64 Open Complete
Newstead over I-64 Open Complete
Tower Grove over I-64 Open Complete
Boyle over I-64 Open Complete
Westbound I-64 ramp at Boyle Open Complete

Vandeventer entrance ramp at  WB I-64

Open Complete
Vandeventer exit ramp at EB I-64 Open Complete


Detour maps

Below are detours for the bridge closures and for the weekend interstate closure. The two bridge detour maps include bicycle, pedestrian and vehicle detours:

Why are improvements needed?

This stretch of I-64 is more than 70 years old and needs to be improved to meet current Federal interstate standards. In addition, four bridges in the area, built in the early 1960s, have deteriorated to a point that they need to be replaced.  While this project is underway, MoDOT, BJC HealthCare and Washington University in St. Louis are making improvements to the roadway to help improve the flow of traffic into the medical campus.

This project will include:

  • Building new bridges at Taylor, Newstead, Tower Grove and Boyle Avenues
  • Constructing a new interchange at Tower Grove/Boyle
  • Adding two new ramps at Tower Grove/Boyle to support the existing ramps
  • Building a new roundabout south of Tower Grove and I-64
  • Installing signals at the westbound entrance and exit ramps at Boyle, and at the intersection of Boyle and Papin
  • Realigning and installing signals on Clayton Avenue at Tower Grove and Boyle to coordinate interchange traffic
  • Constructing new I-64 pavement between Kingshighway and Newstead and resurfacing I-64 between Newstead and Sarah

What will the project look like?


Here are details on the project:

Here are some zoomed in displays for various sections of the project:

How long will construction take?
Work on I-64 and the new Taylor and Newstead bridges is scheduled to be complete by mid November 2013.

Tower Grove and Boyle Avenues will be closed for a maximum of 80 days after Taylor and Newstead are complete.  During this time, there will be three-week periods when the westbound ramp to Boyle will be closed.

Throughout the project, there will be short-term closures of the Vandeventer on and off ramps.

All work will be completed by late fall 2014. 

What is the project cost?
Fred Weber Inc. won the bid for the project at $17.9 Million.

What accommodations are being built for bicycles?

Since Taylor Avenue is part of the Gateway Bike Plan and Tower Grove Avenue is part of the Bike St. Louis Network, both roads will be striped as shared traffic lanes. 

There has been a lot of coordination to determine the best location for the bike route between Forest Park Southeast and the Cortex development. At this time Taylor Ave. provides the safest path across the interstate for the majority of cyclists.

The Gateway Bike Plan, developed in August 2011, provides a long-term vision for providing a connected system of on road bicycle routes between communities, transit, greenways and trails. The plan covers St. Louis County, City of St. Louis, and the urbanized communities of St. Charles County.

The Gateway Bike Plan is a result of a collaborative effort between the Great Rivers Greenway District, Missouri Department of Transportation, East-West Gateway Council of Governments, Metro, numerous municipalities, St. Louis and St. Charles counties, City of St. Louis and Trailnet.

For more details:

Interested in updates on the project?

Click here to request to be added to the e-mail update list for the Tower Grove project. People on the list will get regular updates as the project continues and will be e-mailed news releases about the project, as appropriate.

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