Big Muddy Speaker Series presents:
Replacing a Missouri River Bridge


The southbound Route 69 Bridge, commonly referred to as the Fairfax Bridge, was built in 1933. The northbound Route 69 Bridge, commonly referred to as the Platte Purchase Bridge, was built in 1957. Both were built to accommodate the type, size, and weight of vehicles at the time of construction, and were not designed for the high volume and heavy weight limits of truck traffic that you typically find today within the heavy industrial zone where these bridges are located. Narrow lanes and load limitations restrict the use of each bridge by overweight and oversized vehicles. Because of their age, both structures require frequent maintenance and costly repairs, causing motorists further delay.
Lanny will give an overview of the US69 Missouri River Bridge Replacement project and discuss the project construction to date with particular emphasis on the old Fairfax Bridge demolition.
Meet Your Presenter

Lanny Miller
, P.D., Project Manager, American Bridge Company
Lanny Miller is a Senior Project Manager for American Bridge Company. He graduated with a civil engineering degree from KSU. Lanny has been with American Bridge for the past 5 years and has a total of 23 years of experience in Heavy/Highway design and construction.
Related Presentations
Resources & Links
Dig deeper for more info.
- Mo. Dept. of Transportation Portal on US69 - Fairfax Bridge Project (links to video, photos and more)
- Video of Fairfax Bridge Demolition by Curious Eye Productions
- Video and Slideshow from Kansas City Star.
The Big Muddy Speakers Series in Kansas City
is hosted by these wonderful partners!
- Little Blue River Watershed Coalition
- Friends of Lakeside Nature Center
- Missouri River Relief
- Healthy Rivers Partnership
- Friends of Big Muddy
- Big Muddy National Fish & Wildlife Refuge
- Kansas City Digital Video
Thanks to all of our venue hosts for making this possible! Click here for a list of upcoming presentations» The Big Muddy Speaker Series is also held monthly in Rocheport and St. Charles.
Recordings of Presentations
Kansas City Digital Video has been recording Big Muddy Speaker Series presentations. These are available on their website at this link. Some contain synchronized powerpoint presentations. We will be posting these to the archived presentation pages on bigmuddyspeakers.org. Thanks Micheal Morgan and crew for putting this important archive online! The Big Muddy Speaker Series is partially funded by the Columbia Ecological Services Field Office (USFWS) and the Mo. Dept. of Conservation.
Upcoming Presentations

Leave No Trace Training on the Barge
October 14, 2026St. Louis, MO
Join us for a special Big Muddy Speaker Series on the Living Lands & Waters Barge where Perry Whitaker will lead us in a Leave No Trace Training.
See Event
Missouri River Relief: 25 Years on the Big Muddy
November 10, 2026Columbia, MO
Join us for a journey through time celebrating 25 years of Missouri River Relief's work on the Big Muddy.
See Event
Plastic Pollution, Gulf Hypoxia, and Water Quality
November 11, 2026St Charles, MO
Jennifer Wendt from MidAmerica Clean Future guides us through understanding regional water quality challenges.
See Event