ALE has successfully completed the installation of the arches in the Walterdale Bridge in the city of Edmonton, the capital of Alberta, in Canada.
ALE was contracted by APJV (ACCIONA – Pacer joint venture) to proceed with the skidding, navigation and heavy lifting of the main arch. ALE performed the load transfer to the barges, carefully controlling the load transfer and level using the monitored external ballasting system for modular pontoons.
Designed by ALE, this enables work in 18 separate tanks without physical access to them. The skidding was performed by coordinating the skid system located on land with the mooring system located on the barges. The mooring system was composed of four winches attached to the barge.
Once the skidding was complete, the first barge was relocated and a second one modular barge was introduced in such way that the arch was ready to navigate onto both pontoons now located on the interior supports. The pontoons were navigated on the North Saskatchewan River until they reached the final position. ALE used the mooring system installed on board and changed the different berths on land, according to the sequence accurately defined and calculated in the method statement.