Sydney Metro City – Martin Place

Transport for NSW

Sector: Urban, Public Infrastructure

>82,000Total Workhours
>154,000tSandstone Excavated
>36,000C&D Waste Removed
50+Total Workforce at Peak
>68,000Pedestrians Per Day Adjacent to Both Sites
>95%Resource Recovery Rate – Both Sites

Unique Attributes

Australia’s biggest public transport project – consecutive early and enabling works for Martin Place Station South and North
Significant high rise demolition – 24 storey – and complex deep basement civil works (30m)
One of Sydney’s heaviest (and most critical) banks of gas, electricity, water and fibre optic mains infrastructure beneath/adjacent to tower

Key Challenges

Fully operational and heritage listed rail tunnels connected to basement columns of 24 storey tower, as well as within 3m of basement excavation works
Underpinning Heritage listed structure directly adjacent to civil works, including strict vibration controls
Daily monitoring and Geotechnical Mapping of over 6,000m2 of Excavated Walls

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