Construction of three road-over-rail bridges
Overview
Construction of three road-over-rail bridges (Butler Boulevard, Benenden Avenue and Landbeach Boulevard) and the associated road works to connect subdivisions previously built by RJV across the railway.
Detail
The works included the completion of the communications and traction power conduit and pit system along the length of the railway cut, the construction of approximately 1.8km of asphalt public shared path (PSP) along the embankment of the railway cut as well as the installation of the limestone capping layer to the cut foundation in preparation for the subsequent laying of track-work and ballast material (completed by others).
The project was completed as part of a joint venture with Bocol Constructions PTY LTD. The Joint Venture saw Bocol complete the bridge construction works and concrete wing wall structures whilst RJV completed all road construction, earthworks, diversion works and services.
The road works included the constructions of approximately 8000 square metres of pavement along with earthworks to tie in the adjacent subdivision roads with the newly built bridges. Minor works also included noise wall construction, landscaping, fencing and PSP lighting along the railway alignment.
Each of the bridges involved the construction of a cast in-situ concrete bridge deck with cantilever wing wall abutments, removal of existing services (water, sewer, power, lighting, gas and Telstra) contained within the diversion “bunds” crossing the railway cut, removal of the bund material and its use in backfill to the abutments where possible.