A truss bridge is being replaced with cable-stay bridges.
|Jim Henderson released the photo to the Public Domain (source)|
|New and Old Bridges by Jim Henderson License: Creative Commons Attribution (CC BY)|
(new window) At timestamp 1:00, I noticed they built piles of rock to provide a "soft landing" for the trusses.
(new window) This starts with the how they lowered the center span. The energetic felling begins at timestamp 4:29.
(new window) If you wait a little after the explosion, they start moving around and do show some interesting views.
I learned of this new bridge from Austin Tuck's posting of photos with the comment: "Big holin’ in the big city!!!!"
Casey Siekierka How deep?
Austin Tuck 190’
Casey Siekierka Nice is it for a building?
Austin Tuck New foundations for the Kosciusko bridge, Queens NYC
I'm surprised they had to go down 190' in New York to hit bedrock. I guess not all of New York is built on the base of an ancient mountain. I think 190' would be considered deep even in Chicago where it is expected to have to go deep for bedrock since it was built on a swamp and the lake bed of the ice age Lake Chicago
Saving this satellite image since it will be disappearing
Robert LaCapell posted photos of building a tower crane here that was moved here when it was done with the Tappan Zee project.
|Austin Tuck posted|