e-mosty September 2018 Vessels and Equipment Used for Bridge Construction | Page 43

THE CONSTITUTION OF 1812 BRIDGE:
TRANSPORTATION AND LIFTING
Juan Jose Marti Gastaldo
Figure 1: General View of the Bridge during its construction
Introduction
At 3,082m long and 31-34m wide, the new bridge was
built over the bay of Cádiz with the aim of connecting
the Port of Cádiz with the national highway network,
in the south of Spain. For the cable-stayed spans, ALE installed a total of 56
bridge sections. These varied in weight and size, with
lengths from 4.5m – 52m and weights between 150
tonnes – 1,055 tonnes.
The bridge now provides greater access and
minimises traffic delays through Cadiz, whilst offering
greater business opportunities for work within the
container terminal and port. To achieve these transportation and lifting operations,
ALE has utilised Self-Propelled Modular Transporter
(SPMT) axles for onshore transportation and four
lifting travellers, each of which included: four HLS2000
strand jacks, two skid shoes SS500 and four push-pull
units SS150.
ALE identified two elements of the project: the
transportation and lifting of the cable-stayed deck
sections, as well as the transportation, load-out and
lifting of the 150m long removable span. The former
was the most challenging scope of work.
3/2018