Pontoon bridges

Span the two halves of Curasao s city of Willemstad — Punda and Otrapunda — by walking across the Queen Emma Bridge. The century-old pontoon bridge swings open throughout the day to allow boats in and out of the harbor. 

Pontoon Bridge A floating bridge supported by floating objects that contain buoyancy sufficient to support the bridge and any load it must carry often a temporary structure. 

Pontoon. A pontoon bridge is built across water with materials that float. Each pontoon, or floating object, can support a maximum load equal to the amount of water it displaces. If the load placed on one pontoon-supported section exceeds the water displaced, the pontoon will submerge and cause the entire bridge to sink. 

Multicats, powerful motorised barge/pontoons complete with a hold and engine room, bridge, clear working deck and some form of mechanical lifting equipment, are frequently employed in most marine/harbour works. Work boats can be used as a shuttle vessel, tug, ferry or floating working platform. They tend to be extremely flexible and can carry out work which would otherwise tie up major items of marine plant. 

Edinburgh Tattoo stands Imperial War Museum Holyhead landing pontoon Big Ben roof Immingham conveyor Gloucester Westgate bridge Walton Bridge... 

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