The operation consisted of lowering the main beams of the cantilever bridge cranes that were used to execute the North edge of the Almonte arch.

The lowering operation was carried out using a system of 4 HEAVY LIFTING type hydraulic cylinders with a synchronised stroke between the 4.

The weight of the part to be lowered was approximately 100 tonnes and the bridge cranes were lowered at a speed of approximately 12 m/h and unloaded into a pontoon, which was chartered specifically to receive the load.

The operation was carried out by BBR-PTE Spain with total success.
 
The lowering of the bridge cranes on the North edge of the Almonte viaduct arch marks the end of all the works related to the execution of the arch using a cantilever advancing system, and for the first time the whole closed arch can be seen without the bridge cranes.

Detensioning and dismantling of the provisional staying system is currently being carried out and pilasters are being put in place which will subsequently support the deck of the viaduct.