BACKGROUND

Northern Link is a proposed major underground toll road which will connect the Brisbane Western Freeway, to the Inner City Bypass Clem 7 and the Airport Link tunnel. It is a part of the Brisbane City Council’s TransApex project. The TransApex project is designed to cater for the expected traffic growth within Brisbane’s CBD.

WHAT WE DID

Geotechnical investigation was required to obtain data on the solid geology vital in the design and selection of the proposed tunnel and is route.

Client

Brisbane City Council

Duration

Two months spread over two years of work have been completed.

Location

Boreholes were completed along the proposed route, within restricted urban roadways.

Drilling

Technical Facilitation

  • Deep core holes to a depth of 60-90 metres;
  • Night works due to traffic and site restrictions;
  • Grout backfilling of borehole on alignment;
  • Complex geotechnical engineering insitu rock testing;
  • Installation of Geotechnical Instrumentation.

OUTCOME

“As a result of the investigation the project was deemed feasible and progressed to contract stage, with construction to commence late 2011.”
Gary Bruyeres | Brisbane City Council, Senior Engineer