KiwiRail OO7 Bridge Replacement

In this NZTA project URS was employed by the main contractor, Fulton Hogan, in an integrated design and construction team under an ECI contract. It involved widening 2km of motorway from two lanes each way to three lanes plus dedicated bus lane. It included replacing the Selwood Road Bridge and Henderson Creek Bridge whilst maintaining motorway traffic flows. The civil works included new ramps, earthworks, ground improvement and stormwater management. Meagan’s role was as design manager for the four-year duration of the project, and Noel’s was as lead geometric designer during the I&R phase where he developed the preferred interchange option resulting in safety improvements, reduced land-take and environmental impact.

KIWIRAIL OO7 BRIDGE REPLACEMENT, TAUMARUNUI
Client: KiwiRail
Completion Date: April 2015
Team:

Peter, Lead Structural Engineer

Meagan, Design Manager & Civil Engineer

Sam, Structural Engineer

Jay, Structural Draftsperson

Tracy, Structural Designer

In this KiwiRail project URS was engaged by Downer in a design and construction contract for the replacement of eight rail bridges in the upper North Island. The design team was responsible for determining the most cost effective solution for bridge replacement at each site, whilst considering issues such as constructibility and environmental effects.

Of the eight sites, the solutions included a variety of options including: complete bridge replacement with new approach embankments; replacement of superstructure utilising existing substructure with ground improvements and scour protection for the existing piers; construction of a reinforced embankment with a stream culvert and ground improvements; and bridge replacement with a shorter deck with new reinforced approaches.

The eight sites were mostly in rural isolated areas in steep terrain, and construction activities are limited to off-line work or during short (ie. 24 or 48 hour) line closures.

Photo Credit: Downer Construction

KiwiRail OO7 Bridge Replacement

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