Swing Bridge

A swing bridge is a bridge that has its primary structural support at or near to its centre, about which it can then pivot horizontally. In its closed position, a swing bridge carrying a road over a river or canal, for example, allows road traffic to cross. When a water vessel needs to pass the bridge, road traffic is stopped (usually by traffic signals and barriers), and then motors rotate the bridge approximately 90 degrees horizontally about its pivot point. English examples include:
  • River Tyne at Newcastle Upon Tyne. The Tyne swing bridge has an 85.7 metre cantilevered span with a central axis of rotation able to move through 90° to allow vessels to pass on either side of it.

Other countries

  • The longest swing bridge span is 340 metres, by the El Ferdan railway bridge across the Suez Canal.
   

 

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