Construction Materials - Major Project Case Studies

Legacy Way, Brisbane, Queensland

Legacy Way is a 4.6 kilometre tunnel connecting Brisbane's western and inner northern suburbs.



Brisbane City Council

Total Project Value

$1.5 billion

Head Contractor

Transcity Joint Venture (BMD Constructions / Ghella / Acciona Infrastructure)

Boral Products/Services

Boral asphalt, supply & lay (~100,000t) and Boral concrete road pavement supply (~40,000m3)


The fourth piece of Brisbane City Council's TransApex plan, designed to reduce congestion on Brisbane's road network, the $1.5 billion Legacy Way is a 4.6km underground tunnel connecting the Western Freeway at Toowong (west) with the Inner City Bypass at Kelvin Grove (inner north).

The two tunnel excavations were completed in record time – the first tunnel was completed five months ahead of schedule, the second tunnel was completed two months ahead of schedule. The majority of surface work was completed offline, with reduced impacts on motorists using two of Brisbane's busiest arterial roads.

The project was designed and constructed by Transcity, a consortium responsible for the design, construction, operation and maintenance of Legacy Way, comprising BMD Constructions, Italian tunnelling company Ghella, and Spanish tunnelling and civil infrastructure company Acciona.