ALE has successfully installed one of the world’s longest linkspan bridges in Gujarat, India. This was the first time ALE’s hydraulic floatover jacks were used.
The linkspan bridge, weighing 950t and measuring 100m long, required extensive retrofitting as it was designed for lifting by crane not jacking.
ALE designed a jacking bracket, to transfer the jacking forces into the linkspan so the bridge could be positioned at an incline of up to 5.5° to match the difference of elevation of the jetty and floating pontoon, as well as a spreader mat system to transfer the loads onto the barge.
The linkspan bridge was manoeuvred on the barge from its standby position and moored at the installation location using six 20t mooring winches. ALE utilised four floatover jacks, specially designed to overcome the huge 10.33m tidal variation, to lift and lower at high tide.