Why This Highway Sits on Water, Not Land

Описание: When you drive Interstate 90 across Lake Washington, it feels like any other major urban freeway. The ride is smooth, the lanes are wide, and traffic moves like it always has. But underneath that pavement is one of the strangest pieces of highway engineering in America: a floating bridge system that does not stand on the bottom of the lake at all.

In this episode of Beyond the Exit, we look at how Seattle and Washington State solved one of the region’s most difficult transportation problems with a solution that once sounded almost absurd. We trace the story from the original floating bridge concept, through the growth of the corridor, to the shocking 1990 sinking of the old span during rehabilitation work, and finally to the modern crossing that still carries Interstate 90 today.

This is the story of Lake Washington’s floating bridges: a crossing built on buoyancy, held in place by anchors, tested by failure, and rebuilt into one of the most unusual highway corridors in America.

A special thank you to our collaborator Interstate Kyle for excellent footage that helped bring this story to life. Please visit his channel here:    / @interstatekyle  
We also linked the video footage used from Interstate Kyle below, and we hope you will go check out his work and support his channel.
Collaborator footage courtesy of Interstate Kyle
Channel:   / @interstatekyle  
Featured video   • 2K21 (EP 15) Interstate 90 East in Seattle...  

Special thanks as well to Brittany Herzog Photography for the outstanding drone footage used in this episode. We truly appreciate the chance to help show this corridor from above.

Drone footage courtesy of Brittany Herzog Photography -    • I-90 Bridge/Mavic Air  


If you enjoyed this video, please like, subscribe, and share it with someone who loves highways, engineering, infrastructure, and the stories behind the roads we all use.

At Beyond the Exit, we believe the highway should be the hero of the story.

Items we love - Amazon Affiliate links

Bridges of Seattle (Images of America) Paperback – January 27, 2020 - https://amzn.to/4vyS6AP

EZ66 GUIDE For Travelers - 6TH EDITION Spiral-bound – April 6, 2026 - https://amzn.to/4sPgxaF

Route 66, 100th Anniversary Edition: The Mother Road - https://amzn.to/47X5SmD

Sources, footage, and rights notice:
This video may include footage, images, maps, and reference material used under permission, public domain, public use, fair use, or other applicable rights and licensing standards for commentary, education, criticism, and historical documentation. All third-party materials remain the property of their respective owners where applicable.

If you are a rights holder and have any questions or concerns regarding material used in this video, please contact us and we will be glad to review it promptly.

Copyright and usage notice: Portions of this video may include material used by permission, license, public domain/public use status, or under fair use for commentary, criticism, education, and documentary purposes. All rights remain with their respective owners where applicable. Questions or concerns may be directed to the channel for prompt review.

[email protected]