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Lawrence Hargrave DriveSea Cliff Bridge

Project data

Location: Clifton, Australia

Lawrence Hargrave Drive had suffered numerous dangerous rock falls and embankment failures over the previous 100 years. With the Pacific Ocean on one side and a 300m cliff on the other, a rock fall in 2003 forced the immediate closure of the road.

  • The main structure is a curved Balanced Cantilever Bridge (BCB) adjoining a 150m radius curved Incrementally Launched Bridge (ILB)
  • Total length: 665 metres
  • Consisting of two 3.3 metre-wide lanes with 1.2 metre wide shoulders
  • Balanced Cantilever Bridge Length 455.6m including 6m approach slab
  • Incrementally Launched Bridge at Length 209.4m including 6m approach slab

Architect: LHD Link Alliance


  • Combining both in-situ cast Balanced Cantilever and Incremental Launch techniques in a single bridge


Laing O’Rourke Australia Pty Ltd (then Barclay Mowlem)

Customer's benefit

  • Major benefit for labour saving and safety 
  • The project was delivered 3 months ahead of schedule, suffered zero LTIs from 285,000 man-hours – much of it working at heights.
  • This system allowed the use of access bridges to pier heads which improved safety in a number of ways: preventing unnecessary ground level vehicle and staff movements at the pier bases along the narrow, slippery and dangerous shoreline roadway
Lawrence Hargrave Drive Statement
Tony Woods
General Superintendent, LHD Alliance

The PERI Systems used on our project allowed for safe, efficient and cost effective construction solutions to be achieved.

PERI solution

  • Using of PERI SB Frames to support the headstock