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Jefferson Avenue Bridge Replacement Project over I-64

Jefferson bridge

Girders over the eastbound lanes of I-64. The girders over the westbound lanes have now been installed as well. Click the photo for more recent photos.

Where are we now?

The reconstruction of the Jefferson Avenue bridge has been completed and all lanes and ramps are reopened. Currently, crews are cleaning up a few items.  There will be a resurfacing project under Jefferson next year during the Tower Grove project to improve the driving surface on I-64.

Why Does Jefferson Avenue Bridge Over Interstate 64 Need Improvements?

The Jefferson Avenue Bridge was built in the early 1960’s and has deteriorated beyond the point of simply repairing it.  This bridge structure needs to be completely replaced.  This bridge also has a low clearance between the Jefferson Avenue Bridge and Interstate 64.  This project has been on hold over the past several years to complete the Jefferson Avenue Viaduct to the south and the deck replacement project on the I-64 double deck to the east.

Jefferson Avenue Replacement fact sheet

What Improvements on the Jefferson Avenue Bridge are Being Made?

MoDOT has removed the Jefferson Avenue Bridge over Interstate 64 and is working on replacing it. This bridge will be built in the same location with a higher bridge clearance over the interstate to meet current standards.

The bridge will also be widened to accommodate traffic for a future construction project that will make Jefferson Avenue a full interchange.

The sidewalks will be wider and ADA (American Disabilities Act) accessible. Shared bike lanes will be included on the new bridge as well.

The exit ramp from eastbound I-64 will be upgraded with a dual left turn to provide more capacity. In addition, new signals at the ramp will help move traffic more efficiently though the interchange.

Aerial View of Project Limits

How Will Traffic Be Impacted While Construction Is Under Way?

MoDOT closed Interstate 64 in both directions, the weekend of April 20, to demolish the Jefferson Avenue Bridge.   The new bridge will be reopened to traffic within 90 days.

Various daytime lane closures will occur on the interstate throughout the construction of the bridge. Weekdays, up to two lanes may be closed in either direction of I-64 between 9 a.m. and 3 p.m. Weekends, there may be up to two lanes closed in either direction around the clock.

Each entrance and exit ramp at this intersection will close one at a time for approximately three weeks of reconstruction. The ramp from Jefferson to westbound I-64 is currently closed and is scheduled to reopen by mid-July.

When combined with work at I-64 and Tower Grove, drivers on I-64 may experience congestion during this project.  The easiest way to avoid congestion is to consider alternate routes -- using Metro, I-44 to the south or I-70 to the north.  For local travel, drivers can use Market or Chouteau, depending on which side of the interstate they are on.

You can view congestion at I-64 and Jefferson on MoDOT's Gateway Guide. The I-64 and Jefferson 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 @ Jefferson " camera -- it's in the middle of the dropdown menu.


The completion date is August 1, 2013.


Construction outlook

Here are the current impacts of construction on the Jefferson Bridge replacement project:

Roadway Impact Projected change
I-64 eastbound Open except for routine maintenance.  
I-64 westbound Open except for routine maintenance  
Jefferson over I-64 Open  
Jefferson ramp to WB I-64 Open  
Jefferson ramp from EB I-64 Open  

Pine Street ramp to WB I-64

Ewing ramp to EB I-64 Open  

Detour Routes

There are multiple detour routes motorists can use while the Jefferson Avenue Bridge is under construction.  Compton Avenue, 18th Street and 14th Street will be the signed detour routes for the various closures.

Detour Map

When Will Construction Take Place?

Construction is scheduled to begin in April 2013.  The actual bridge replacement will take 90 days to complete.

What will the project cost?

Fred Weber Inc. is the winning bidder for this construction contract at $5.5 million dollars.











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