Rolleston Gravity Sewer

The Rolleston Gravity Sewer pipeline is a major link to the Izone Industrial Southern Business Hub in Rolleston. The project required excavating down the centre line of Jones Road, with the added complexity of working around 1600 vehicles accessing the road daily. A temporary bypass was constructed on adjoining land to allow uninterrupted traffic flow and access to Izone whilst the works were taking place.

The project began via an existing manhole at depths of almost 6 metres and, at a total length of 680m, it proved challenging at times and called for night shifts to ensure the deadline was met. However, due to the experience and maturity of the team, Johnston Civil saw the project was completed on time, and by working closely with the local business and property owners Johnston Civil was able to minimize impact on their livelihoods during construction.