Hangzhou Bay Bridge

The Hangzhou Bay Bridge-or, more pressingly, the Great Trans-oceanic Hangzhou bay Bridge-is a cable-stayed structure structure. when the bridge was completed in 2008 is was the first direct road link between Shanghai and Ningbo, in the Zhejiang Province. The bridge is the longest trans-oceanic bridge in the world. Construction work started on 2003 and toke nearly a decade of feasibility studies. The bridge is 36 Kilometers long with six expressway lanes in two directions, making it the second longest bridge in the world. The bridge is designed to last a hundred years and to carry traffic traveling at 100 kph.

The highway runs southwest from Shanghai to the city of Jiaxin, in Zhejiang Province, before swinging southeast, directly across Hangzhou Bay, to the city of Ci-xi, also in Zhejiang Province, then continuing southeast to the major city of Ningbo. Before the bridge was completed the route between Shanghai and Ningbo was 400 kilometers and after completion of the bridge the distance is just 80 kilometers!

One important economic consequence of this is that Ningbo, with its up-to-date container port at Beilum, will be able to compete on more equal terms terms with Shanghai’s vast docks at Pu-dong for international maritime freight. To the Ci-xi, large new industrial zones are being built to add to the already massive capacity of the Yangtze Delta region. Another economic plus is that tourism, especially in the domestic market, because the bridge has made a four hour long drive into one hour long which does attract more people for their weekends.

Facts

  • The Hangzhou Bay Bridge costed approximately US$1.42 billion.
  • When the bridge was opened, the traffic flow was expected to be around 52,000 vehicles per day, though in 2009 it was raised to 96,000 vehicles per day.
  • Two thirds of china’s national private investments originate in the Province of Zhejing.

Millennium Bridge

The Millennium Bridge located in Newcastle, England is not a normal bridge but a bridge which comes under the category ‘canal’. Canal bridges are huge bridges which are divided in two parts, when a ship is crossing by a canal bridge. The bridge will tilt itself 30-50m degrees up from both sides.

Where as in the Millennium Bridge, the whole body will tilt in one piece. When the Millennium Bridge first operated only 35,000 viewers were standing by. People still see the bridge tilting but such a beautiful bridge can also be seen without motion in its gears.

The bridges cost price was 40 million USD and took more than 2 years to complete after 1 year of the construction was ready to operate in 2003. The beautiful and brilliantly original design by the Wilkinson and Eyre was the outright winner of a competition launched by Gateshead Council in 1996.

Facts

  • The hydraulic system is powered by 8 electric motors which generate 589 horse power.
  • When the bridge is raised the suspension cables are kept taught by 14-ton casting to either side.
  • The bridge is self-cleaning, with litter rolling into chutes at either ends each time the structure tilts.