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Q: World's Longest Bridges ( Answered 5 out of 5 stars,   0 Comments )
Subject: World's Longest Bridges
Category: Reference, Education and News > General Reference
Asked by: aarongindc-ga
List Price: $5.00
Posted: 02 Jul 2002 19:08 PDT
Expires: 01 Aug 2002 19:08 PDT
Question ID: 36063
What rank is the Deer Isle bridge among the world's longest/largest? 
This is generally measured by the distance of the longest span. 
Subject: Re: World's Longest Bridges
Answered By: mother-ga on 02 Jul 2002 20:30 PDT
Rated:5 out of 5 stars
Hello, and thank you for your question.

The Deer Isle (or Deer Isle-Sedgwick) Bridge of Penobscot Bay, Maine,
is ranked among other suspension bridges at number 85.
"Major Suspension Bridges in the world" (Strait of Messina Bridge)

The list in "Structural Steel Designer's Handbook" (by Roger L.
Brockenbrough and Frederick S. Merritt) ranks the Deer Isle bridge at
number 66 among other suspension bridges, but this list is only
inclusive up to 1997, and is therefore not as current as the first
list (above).
"100 Longest Suspension Bridges in the World" (Rutgers ASCE)

Built in 1939 by Robinson & Steinman to cross the Eggemoggin Reach, it
has been retrofitted to correct a bit of "unwanted" swaying in the
wind. In fact, it is  infamous for this tendency and is grouped among
other "engineering failures."
Suspended Animation: The Tacoma Narrows Bridge (by Jason Zasky,
Failure Magazine)

More information and photos of the Deer Isle bridge can be found at

Additional resources:

Analysis of Wind and Wind Effects Revisited: A Case Study of Deer
Isle-Sedgwick Bridge (National Institute of Standards and Technology)

David Steinman (The Civil Engineering Portal)

Search strategy:

"deer isle bridge" span
"deer isle" bridge rank
list "suspension bridges"
"deer isle" bridge failure

Hope this helps!
-- mother-ga
aarongindc-ga rated this answer:5 out of 5 stars
Wow!  What an amzaingly thorough answer!  The best $5 I've ever spent!

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