Get smart curated videos delivered to your inbox every week.      
The Kid Should See This

Dismantling the San Francisco–Oakland Bay Bridge

Weighing more than 25 tons each, the five 504 foot (153.6 meter) long trusses of the San Francisco–Oakland Bay Bridge’s eastern span have each been dismantled and lowered onto a barge that takes them away for further disassembly. In the Feb 2016 video above, video journalist Mark Jones explained how this 1935 feat of engineering was being slowly deconstructed in an environmentally friendly way.

Below, a speedy time lapse video of the third truss, taken away in May 2016.

As of August 2016, the last truss of the old Bay Bridge is ready for removal. The new eastern span opened in September 2013.

Related vids: What’s an Engineer? + The Engineering Process, Red PaperBridge, and the incredible monster-sized bridge building machine in action.

This award-winning video collection is reader-supported. Become a sustaining member to keep TKSST online and free for everyone, including teachers and parents who use it as a resource to spark learning and curiosity for kids.

🌈 Watch these videos next...

Gravity Glue: Balanced rock sculptures by Michael Grab

Rion Nakaya

Construct a Roman aqueduct, a DIY engineering activity

Rion Nakaya

Can this super long logging truck turn and cross this tiny bridge?

Rion Nakaya

Computational Design of Mechanical Characters

Rion Nakaya

K’nex engineering marvel: Clockwork

Rion Nakaya

Making large magnetic cubes

Rion Nakaya

Clearing snow from the cables on the Port Mann Bridge

Rion Nakaya

Succeed by Failing: Failure points and how to fix them

Rion Nakaya

How to build a balancing bridge out of coins without glue

Rion Nakaya