Infrastructure: For the period of April to November 2008, Rollco has delivered over 500T of curved & fabricated walers of various sizes and radii to the Water Delivery Alliance. WDA is charged with tunneling from the pump station at Sydney's Desalination plant to the main water supply.

With hundreds, if not thousands, of tunnel sets for the Cross City and Lane Cove Tunnels, Rollco has demonstrated its ability to meet critical quality and cost benchmarks whilst achieving construction deadlines on large infrastructure projects.