|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Tower Bridge
|
Bascule, suspension |
London, England |
268 |
1894 |
| Designers |
Materials |
Facts |
Sir Horace Jones Sir John Wolfe-Barry
|
steel masonry
|
When it opened, the Tower Bridge was raised over
1,000 times to allow ships to pass. Today, it
only opens less than 100 times per year.
|
The steel towers are covered in decorative
masonry and stand 206 feet (63 m) tall.
|
Originally the bascules (French for see-saw) were
operated using steam. They are now operated by
oil and electricity.
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Golden Gate Bridge
|
Suspension |
San Francisco, California, USA |
2737 |
1937 |
| Designers |
Materials |
Facts |
Joseph Strauss
|
steel concrete
|
Over one million vehicles have crossed the Golden
Gate Bridge.
|
The bridge is painted orange vermilion, or
international orange. The US Navy would have
preferred black and yellow stripes for visibility.
|
Eleven workers died during the bridge construction.
A safety net installed under the bridge saved the
lives of 19 workers. The survivors were considered
members of the "Half-Way-to-Hell Club."
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Brooklyn Bridge
|
Suspension |
Brooklyn-Manhattan, New York, USA |
1825 |
1883 |
| Designers |
Materials |
Facts |
John Roebling Washington Roebling
|
steel granite
|
The Brooklyn Bridge is the second busiest bridge in
New York City, with a traffic volume of 144,000
vehicles per day. When it was built, it was
the longest suspension bridge in the world.
|
Engineer John Roebling died during construction.
His son Washington took over, but became very ill
and bedridden during construction. He relayed
instructions to the crew through his wife Emily.
|
With an admission cost of one cent, over 150,000
people crossed the Brooklyn Bridge on opening
day.
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Sydney Harbour Bridge
|
Arch |
Sydney, Australia |
1149 |
1932 |
| Designers |
Materials |
Facts |
Dr. J.J.C Bradfield Ralph Freeman Sir Douglas Fox
|
steel concrete
|
The bridge deck is a whopping 49 meters
(160 feet) wide. The eight lanes of traffic
carry over 150,000 vehicles per day.
|
Before the bridge was opened, it was test
loaded using up to 96 steam locomotives placed
in various configurations.
|
There are approximately 6,000,000 rivets
holding the bridge together.
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Iron Bridge
|
Arch |
Shropshire, England |
30 |
1779 |
| Designers |
Materials |
Facts |
Abraham Darby III Thomas Farnolls Pritchard
|
cast iron
|
The first bridge in the world made entirely of
cast iron. Shropshire was in the center of many
iron factories, so the bridge was built with iron.
|
Due to disrepair, the bridge was closed to vehicular
traffic in 1934. |
On its 200th birthday so many pedestrians gathered
on the bridge and caused pieces to break off. Today,
only 200 pedestrians are allowed on the bridge at
one time.
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Gladesville Bridge
|
Arch |
Sydney, Australia |
579 |
1964 |
| Designers |
Materials |
Facts |
J. A. L. Shaw H. M. Sherrard
|
reinforced concrete
|
The bridge was the longest-spanning single
concrete arch bridge when completed.
|
- |
- |
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Akashi Kaikyo Bridge
|
Suspension |
Kobe and Awaji-shima, Japan |
3910 |
1998 |
| Designers |
Materials |
Facts |
Honshu-Shikoku Bridge Authority Matsuo Bridge Company
|
steel
|
Longest suspension bridge in the world.
It's 928 foot towers are the highest in the world.
|
The bridge is designed to handle 180 mile-per-hour
winds and to withstand a 8.5 magnitude earthquake.
|
90,000 tons of steel was used to construct the
stiffening girders. The total length of cable is
300,000 kilometers which is enough to circle the
earth 7.5 times.
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Firth of Forth Bridge
|
Cantilever |
South and North Queensferry, Scotland
|
2522 |
1890 |
| Designers |
Materials |
Facts |
Benjamin Baker John Fowler
|
steel
|
It was the world's first all-steel long-span
bridge and the world's longest bridge.
|
The bridge consists of three towers supporting
two cantilevers and two main spans.
|
Some of the structural members of the bridge
are as large as 12 feet in diameter.
|
|
|
| Bridge |
Type |
Location |
Length (m) |
Year Completed |
|
Confederation Bridge
|
Concrete box girder |
Borden-Carleton, Prince Edward Island and Cape
Jourimain, New-Brunswick, Canada
|
12900 |
1997 |
| Designers |
Materials |
Facts |
Strait Crossing Development
|
steel concrete
|
Longest bridge over ice covered waters in the world.
|
There are 34 traffic signals on the bridge; they
will be green under normal conditions.
|
Although the 1.1 m concrete barriers block the
motorist view, they act as a windbreak
|
|