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I-64 Daniel Boone Bridge over the Missouri River

Project Alerts & Updates:

Bike-Ped Trail Open! (updated 6/9)

The new bike/ped trail on the eastbound I-64 Daniel Boone Missouri River Bridge is open.  The path connects the Monarch Levee Trail in St. Louis County to the KATY Trail in St. Charles County.  The Boone Bridge is the seventh Missouri River crossing in the state to have a dedicated bike/ped crossing.  Click here to see photos of the new trail. 

The Monarch Levee Trail on either side of the Boone Bridge is also back open.  The trail closed in 2013 during construction. 

Old Boone Bridge Demolished (updated 3/7)

The St. Louis County truss of the Boone Bridge was demolished on February 18.  The St. Charles County side was demolished on March 7.  To see photos from both demolitions, click here.  To see videos of the demolition, visit the MoDOT St. Louis YouTube page.




Rendering of the new I-64 Missouri River Bridge

Rendering of new I-64 Daniel Boone Missouri River Bridge and shared-use path

A project to construct a new Daniel Boone Bridge over the Missouri River between St. Louis and St. Charles counties has been funded.  A total of $125 million has been allocated for the project -- that includes money for utility relocation, property acquisition, design and construction of the project.  Walsh-Alberici was selected in 2012 as the joint venture contractor to build the new bridge.

What is the construction schedule? (updated September 2014)

2013 = construction begins on the new eastbound bridge, the Spirit of St. Louis Blvd bridge over I-64 and on a new Chesterfield Airport Road Bridge and North Outer Road connection.

2014 = the new Chesterfield Airport Road bridge and interchange opens by November 2014.

2015 = traffic on the new eastbound bridge by late spring 2015 and rehab work starts in the 1980s bridge, with completion by the end of the year

2016 = the 1935 westbound bridge will be removed

Why is a new bridge needed?

The current westbound Daniel Boone Bridge was built in the mid-1930s, making it nearly 80 years old.  It was not designed for interstate level traffic and has reached a point where it needs regular preventative maintenance.  Moreover the current westbound bridge has three narrow lanes that often get congested during peak travel times.

Where will the new bridge be constructed?

The new bridge will be built upstream from the existing two bridges.  Once it is complete, eastbound I-64 traffic will use the new bridge and westbound traffic will be shifted to what is currently the eastbound bridge. 

Will the bridge include a bike-pedestrian lane?

Yes. A shared used bicycle/pedestrian trail on the upstream side of the new bridge opened in June.  It includes connections off the bridge to the Monarch Levee Trail on the St. Louis County side and to the KATY Trail on the St. Charles County side. 

What will happen to the current 1935 westbound bridge?

The 1930s westbound bridge was demolished in early 2016.


Construction Photos (updated September 2015)


To see more construction photos, click here.



Click the image above to see a time lapse video of construction.



Document Library

The Walsh-Alberici joint venture team, with designer Burns & McDonnell, was selected by the Missouri Highways and Transportation Commission as the design-build contractor for the new I-64 Daniel Boone Bridge on July 10, 2012. 

I-64 Daniel Boone Design-Build Procurement Information

The following exhibits from the contractor team show the $111 million Design-Build plans:

Cross section typical on the bridge (pdf)

Elevation view in the river (pdf)

Overall project scope (pdf)

Rendering of new bridge looking east toward St Louis (pdf)

Rendering of new bridge looking west toward St Charles (pdf)

Scenic bike/pedestrian trail bridge overlook (pdf)

Use of all three bridges during construction phases (pdf)

Environmental Impact Statement (32.5 Mb, pdf)

Re-evaluation of Environmental Impact Statement (1.1Mb, pdf)

Record of Decision, 2004 (4 MB, pdf)

Record of Decision, November 2011 (8.91 Mb, pdf)


For more information contact Project Director Jim Gremaud at 888-ASK-MODOT or to sign up for e-updates, please send an email to Boone.Bridge@modot.mo.gov.

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