The Sydney
Harbour Bridge is one of Sydney's most famous landmarks. Completed in
1932, the construction of the Sydney Harbour Bridge was an economic feat
as well as an engineering triumph. Prior to the Bridge being built, the
only links between the city centre in the south and the residential north
were by ferry or by a 20 km (12 ½ mile) road route that involved five
bridge crossings.
The Harbour
Bridge, known as the "Coat Hanger", took eight years to build, including
the railroad line. The bridge was manufactured in sections on the site of
the future Luna Park.
December, 1926 Planted in solid sandstone, the foundations are 12 m (39 ft) deep.
Anchoring tunnels are 36 m (118 ft) long and are dug into rock at each
end.
November, 1929
The arch was built in halves with steel cable restraints initially
supporting each side.
August, 1930 The arch spans 503 m (1,650 ft) and supports the weight of the bridge
deck, with hinges at either end bearing the bridge's full weight and
spreading the load to the foundations. The hinges allow the structure to
move as the steel expands and contracts in response to wind and changes in
temperatures.
October, 1930 Once the two halves were met, work began on the deck. The deck is 59 m
(194 ft) above sea level and was built from the center out.
Bridge Facts
The Harbour
Bridge was officially opened on 19 March 1932. The total cost of the
Bridge was approximately 6.25 million Australian pounds, and was
eventually paid off in 1988. The initial toll for a car was 6 pence and a
horse and rider was 3 pence. Today the toll costs $2.00. The toll is now
used for bridge maintenance and to pay for the Sydney Harbour Tunnel. The
annual maintenance costs are approximately A$5 million. Over 150,000
vehicles cross the bridge each day.
The bridge was
built by 1,400 workers, 16 of whom were killed in accidents during
construction. Painting the bridge has become an endless task.
Approximately 80,000 litres (21,000 gallons) of paint are required for
each coat, enough to cover an area equivalent to 60 soccer fields. Before
Paul Hogan (from the movie 'Crocodile Dundee') became famous, he worked on
the Sydney Harbour Bridge as a painter.
Pylon Lookout
Recommended for
all visitors to Sydney is the Pylon Lookout. If you are feeling energetic,
you can climb the 200 steps for a spectacular view of Sydney Harbour.
Inside the Lookout is a fascinating display on how this bridge was built.
Entry to the Pylon is from the pedestrian walkway on the Harbour Bridge.
You can get to the walkway via the stairs in Cumberland Street, The Rocks,
or from near Milsons Point Station on the north side. The Pylon Lookout is
open every day except Christmas Day.
After 4 weeks of
re-development, the Sydney Harbour Bridge Pylon Lookout re-opened
23rd June 2003 with fascinating new exhibits.
The development
includes the installation of a 'Dangerous Works' model which
highlights aspects of the working conditions experienced during
construction of the Sydney Harbour Bridge, and two spectacular
stained glass memorial feature windows depicting the skill and
dedication of the workers who made the bridge. There are many
interesting facts to discover about the Sydney Harbour Bridge at
the Pylon Lookout.
For more information
on the Sydney Harbour Bridge Pylon Lookout and its new exhibits go
to
www.pylonlookout.com.au
For more
information take a look at the following link;
http://www.bridgeclimb.com
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