Strukton Immersion Projects said that this week's operation to immerse the 1915 Canakkale Bridge's second and last caisson took 72 hours and that it was positioned on the seabed to within 10mm.
The company is responsible for the engineering of all temporary facilities and the jacking, transport and immersion of the elements.
The Canakkale Bridge will cross the Dardanelles Strait in Turkey with a 2,023m span - currently set to be the longest of any suspension bridge in the world.
A special ballast system was designed for the precise immersion of the caissons. The caissons were immersed by filling ‘clusters’ with water in a controlled way. A guide system on the seabed was used to place the caissons in the right position.
Financial close for the project was reached last year (link opens in new tab).