South Western Interceptor - Puhinui Creek Pipe Bridge
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Client: Watercare Services
Sector: Infrastructure
Contract Value: $400,000
Completed: May 1998
Main Contractor: Brian Perry Civil

Work complete 1998

This pipe bridge spans 60 metres over lower reaches of the Puhinui Creek.  The total weight of the tubular steel span is 40t.  The steel bridge spans between cast insitu concrete abutments. 

Brian Perry Civil carried out the abutment construction works and installation of the prefabricated steel truss sections.  The fabrication of the steelwork was managed by Brian Perry Civil under subcontract.

An innovative method was employed to achieve installation of the environmentally sensitive environment.

A temporary central support was set up on a pontoon, floated in on a high tide and ballasted down.  The use of a temporary central support allowed the bridge structure to be craned in in two halves and jointed once in place.  This maximised the crane reach achievable allowing the installing crane to be positioned well clear of the works.  Once the two bridge truss sections were installed and joined, the temporary central pier was removed.