Bachy Soletanche has announced that it has completed a complex rail project in Bristol for Kier ahead of schedule.
The work involved constructing two retaining walls for wing walls to support a new bridge to carry Parsons Street over the railway line under live rail conditions and working within 5m of train services.
Although both retaining walls are for the same project, the work was split between two sites for the northern and southern wall. The southern wall is formed from 36 1,050mm diameter rotary piles that were bored to 18m depth to found in the Mercia Mudstone. In total 32 piles of the same diameter were installed for the northern wall to 16m depth.
Both walls were constructed longer than their final length to allow a slider beam to be installed for the new deck to be moved into position and the piles will be cut down to their final level once the new deck is in place.