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Evolution of Bridges

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ashley clark

on 10 March 2016

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Transcript of Evolution of Bridges

The Golden Gate Bridge is a suspension bridge
The Brooklyn Bridge is a suspension bridge
The Sunshine Skyway bridge is a cable-stayed bridge

The George Washington bridge is a double-decked suspension bridge
Evolution of Bridges
ROME'S BRIDGES
The First Bridges date back to 1-2 century Rome
Most Bridges were Arch Bridges
Bridges were mainly made of stone but for smaller bridges wood and rope were used
Some Bridges include, Pons Cestius, Ponte Milvio, and Ponte Sisto
Middle Ages
BIBLIOGRAPHY
http://channel.nationalgeographic.com
~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~
https://blogofbad.wordpress.com
Elliptical Arches were made as an improvement over Rome Arches so that bridges could be more supported
5-15 Century
Some Bridges built in this time include, Upper Bridge, Old Bridge, and Stone Bridge
R
e
n
a
i
s
s
a
n
c
e

P
e
r
i
o
d

14
-
17
Century
Leonardo

Da

Vinci

made

a

bridge
design that
architects

at

the

time

called

impossible

but

it
actually

would've

been

a
sound bridge
Ammannati

made

a
change

to

the

elliptical

arch,

making

it

more

sturdy

and
this arch has
been

used
in
modern bridges
Palladio

used

the
design
of

the

truss
bridge
and
designed

successful

wooden

bridges

with

spans

of

98

feet
http://www.britannica.com
Leonardo Da Vinci's Bridge design
Some Bridges include
,
The Monnow Bridge,

Santa

Trinita

Bridge,

and

The

Pont

De

Neuilly

Bridge
MODERN TIMES 17 Century- Now
More than ever a large variety of bridge designs are used but suspension bridges are increasingly popular along with cable stayed
Arched bridges are almost extinct for large spans of area
Although too many advancements to count have been made, a revolutionary one is computer designs so that you can almost make a perfect replica of a bridge without even beginning to build it
http://onlinepubs.trb.org
Galloping Gertie
This Bridge was built July 1, 1940. The Bridge was so unstable that it moved with the wind. People who drove over it said it was similar to a roller coaster. Not even a full 5 months had passed when it finally collapsed. Unfortunetly a cocker-spaniel named Tubby was killed when it collapsed The main reason for it falling were the 8 foot long girders, not hardly long enough for a sturdy bridge.
By: Taylor, Josiah, and Ashley
OTHER BRIDGES
Tacoma Bridge
The
I ND
Full transcript