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My sister-in-law sent me the link to this time lapse video of the installation of a new bridge (Walsh Torrence Bridge) for use by the the Chicago South Shore and South Bend RR.  The bridge is 398' long and weighs 4.7 million pounds.

 

The coolest thing about the bridge is that she designed it.  It took many years from the time she designed it to the time it was built and installed.  The video is made from snapshots at 10 second intervals.

 

http://www.youtube.com/watch?v=yx0-MXI-U5Q&feature=em-share_video_user

 

Enjoy!

 

Last edited by C&O Allan
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