WestConnex is a 33-kilometer predominantly underground motorway scheme in Sydney, The M4-M5 Link Project is the final and most critical component of WestConnex and Vaughan Infrastructure were awarded multiple contracts across both Stage 1 and Stage 2, in addition to civil works for the M5 basin. 

Scope of works include: 

• 21,000m3 of Bulk earthworks 

• 120m x 90m biofiltration basin (500mm of filter material, 100mm of transition material, 450mm drainage layer) 

• Stormwater Relocation up to DN1500 and FRP 

• Installation of GPT (gross pollutant trap) precast concrete pit (approx. 40tn) 

• DN1500 headwall installation inkling rip rap projection 

• Penetration of existing stormwater shaft (Ø3600) to allow for the connection of new DN1500 stormwater pipe, Concrete stitch works complete after DN1500 connection to stormwater shaft (Ø3600) 

• 87 Concrete Pits, 250m Kerb and Gutter, 450m2 Footpath construction 

• 1.8km of ITS Backbone 

• 150 piles and pile caps for streetlights, 150 street lights installed and commissioning 

• Services route including: 6km of water services, 3km of electrical conduit/cable, 800m of fire water and 1.4km of sewer