ALE has completed the load-out and installation of the Tower Road bascule bridge, weighing 445t, in Birkenhead, UK.
Prior to the load-out, ALE weighed the bridge to check that the weight and Centre of Gravity (CoG) were as specified. The tug boat and barge, along with its pumps, winches and link span, were prepared onsite several days in advance.
ALE also rigged 20 axle lines of SPMT in a configuration of 2 x 2 file 10 ready for the load-out. ALE installed support stools under the bridge’s main girders and carried out a trial lift with the SPMTs the day before the load-out.
Once the actual lift was complete, the stools were removed. ALE rotated the bridge 90 degrees to line it up with the barge’s link span and transported the bridge onto the barge. The load-out was carried out gradually alongside the ballasting operation.