Project Summary

Earthtech carried out detailed geotechnical investigations for the four-lane bridge, associated on- and off-ramps, and road alignments. This included the design of deep soil mixing ground improvement to address liquefaction effects, retaining walls, earthworks, stability assessment adjacent to live roads and nearby gully, and dewatering for buried services construction. The scope of work included construction inspections and producer statement (PS4) signoffs. During the course of the project, we formed effective working relationships with the project team.

Services Provided

• Detailed geotechnical investigations, including seismic testing.
• Geotechnical design of bridge foundations, retaining walls, ground improvement, slope stabilisation works, preloading to address ground settlement effects, dewatering and groundwater control works, and many more.
• Contractors' temporary works, including haul road formation.
• Specialist assessment of liquefaction effects to optimise ground improvement design.

Project Conclusion

This project showcases how Earthtech's specialist geotechnical expertise, delivered in close collaboration with the wider design team, brought real value to the outcome.