Case Study: Highway Bridge Slab Lifting and Re-levelling

Our Solution:

Resinject proposed a tailored deep penetration solution and pier development to raise and stabilise the eight slabs and re-level the road surface levels with the bridge roadway surface thereby minimising future risk to highway traffic. The injection points for this treatment were targeted at four varying depths to create piers providing strength and support for the roadway. TfNSW accepted Resinject’s proposal, and the treatment was confirmed.

Resinject’s treatment design included a grid pattern of drill holes across all four lanes plus verges of traffic and incorporated a range of injection depths below the road surface.

After completing the proposed tailored injection solution, Resinject had been successful in raising the approach and departure slabs to the desired levels and brought alignment with the bridge roadways as planned. Furthermore, the works were completed within a staggered shift process which minimised the disruption to the highway traffic and public. The collaboration between Resinject and TfNSW ensured the mitigation of risk and safety for personnel and the public. TfNSW were delighted with the results, the efficiency of the service delivery and especially the quick response given the urgent safety nature of this project