SKM was engaged by Abigroup Contractors to provide professional engineering services for the preparation of the tender, detailed design and documentation of the structural and civil works for the Craigieburn Bypass.
The Craigieburn Bypass provides a 17.5km length of freeway-standard facility linking the Metropolitan Ring Road at Thomastown to the Hume Highway north of Craigieburn. The works were covered by four separate contracts, Stages 1 to 4.
Stage 1 involved the works associated with the grade separation of Connection Road over the Freeway for the development of the Bypass to enable the construction of the Bypass carriageways to proceed below the new structure.
Stage 2 involved the works associated with the interchange between Craigieburn Bypass and Metropolitan Ring Road. It included construction of the interchange ramps and structures over this length of the Bypass and approximately 0.5km of the Craigieburn Bypass Carriageways.
Stage 3 involved the works associated with the freeway from the Metropolitan Ring Road interchange to Vearings Road. It included the construction of approximately 7km of the Craigieburn Bypass Carriageways, a grade separated interchange at Cooper Street, O’Herns Road Bridge and Pedestrian Underpass, Whittlesea Gardens Pedestrian Bridge, together with associated architecturally designed noise walls and features.
Stage 4 involved the works associated with the freeway from the Vearings Road to north of Mt Ridley Road. It included the construction of approximately 8km of the Craigieburn Bypass Carriageways, interchanges at Craigieburn Road East and the Hume Freeway and a total of nine bridges.
An element that was consistent throughout the works, was the design of the drainage works to satisfy performance objectives. This included the design of water treatment facilities to achieve the required water quality objectives utilising best practices for stormwater treatment and construction management.