Dewatering involves temporarily lowering the water table to allow soil to be excavated from a work site without it refilling with water. This process will be used in construction of the project's underground station boxes and portals.

On Sunday 28 May Premier Mark McGowan and Transport Minister Rita Saffioti released artist impressions for Airport Central Station.

Works are now underway across all four major construction sites to prepare for the start of tunnelling. At Forrestfield, our busiest site, excavation of the dive structure is progressing well and in the coming weeks will reach a depth of 14m.