On: B5-BJ2 – Ice Cream Barges – Concrete Ship Constructors (2023)

[strongpigeon]

The 520 and I-90 bridges in Seattle are built with floating concrete pontoons.

[mulmen → strongpigeon]

Ooh! Are we talking about infrastructure projects in Washington State? This is a nerd-snipe headshot.

Washington State has four of the top five floating bridges in the world!

I-90 is actually two bridges, the second and fifth longest in the world.

SR-520 is the longest.

Hood Canal is third.

https://en.wikipedia.org/wiki/List_of_pontoon_bridges