Portfolio Tag: Expressway

Gallagher Intersection Improvements

The Gallagher Intersection Improvements project was primarily road widening an upgrading to traffic signals, however the underlying peat made it very complex.  1428 timber piles were used as the ground improvement methodology, with a load transfer platform constructed from layers of Geofabric, Geogrid and AP40.  Water infrastructure was upgraded as part of the project also,…
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Mercer to Longswamp Expressway

BBO were engaged by Transit New Zealand in 1998 as consultant for the completion of investigation, design and construction administration/surveillance for the Mercer to Long Swamp Expressway project. The four laning of 12km of SH1 included two interchanges, six bridges, four intersections, 1km of rail deviation, and 1,700,000m³ of earthworks. BBO’s role included survey, stakeholder…
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