LENNOX BRIDGE REPOINTING

Project Description:

These conservation works were an additional package required to be undertaken as part of the Lennox Bridge Portals Project. This remediation of the entire eastern and western face and soffit of the bridge involved cleaning, desalination, repairs and repointing all of the joints to all sandstone elements.

COMPLEX CHALLENGES:

The eastern stage of works involved a complete demolition and re-construction of the existing concrete balustrade and footing to construct a crash barrier conforming to RMS specification. The concrete was required to be carefully saw cut and demolished due to the existence of services below, and also the delicate nature of the existing sandstone blocks that the concrete had been poured directly on top of. Access was required on the external side of the balustrade, which included the area spanning over the Parramatta River. A heavy duty access bridge was installed adjacent, but independently of the Lennox Bridge to provide a safe catch deck and access to compete the new balustrade construction. Once the concrete balustrade was complete, the entire external length was clad with sandstone cladding to replicate the existing sandstone façade.

The bridge built for access to the balustrade was re-designed and converted from a single access level at the top, to a 3-level access covering the entire face of the eastern arch whilst still spanning freely over the Parramatta River.

The bridge built for access to the balustrade was re-designed and converted from a single access level at the top, to a 3-level access covering the entire face of the eastern arch whilst still spanning freely over the Parramatta River.

Business unit:

Engineering

Client:

Parramatta City Council

Current status:

Complete

Start date:

Feb 2015

Completion period:

April 2015

Contract type:

Lump sum

Value:

$0.5 million