Sandhills Expressway Four to six lane motorway Crossover or Interchange June 2010
Cross-over or Interchange Ground level round-about (at grade) – Like Otaki -> Not an option – Open interchange –> high number of affected properties Underpass (tunnel) – Expressway at ground level – Local Road underpass – Not an option –> water table (eg Wiamea stream) Bridge - Crossover or Interchange ? – Local Road over Expressway – Expressway over Local Road
TWO lane WLR built in stages Bridge over the Waikanae Ground level interchanges
Four lane Sandhills Expressway Bridge over the Waikanae Bridge - Crossover
Local Road - now
Crossover - Alternatives Crossover No access Interchange Minimal Footprint At grade Interchange Local Road over Expressway
Local Road – Crossover Local Road over Expressway Expressway Local Road 14 m 9 m 8 m 5 m 0 m
Local Road – Crossover Local Road over Expressway Expressway Local Road
Local Road – Crossover 5`+ meters of bunding Local Road over Expressway 8 meters at crossover Expressway Local Road
Expressway – Crossover Expressway over Local Road 14 m 9 m 8 m 5 m 0 m
Expressway – Crossover Expressway over Local Road 14 m 9 m 8 m 5 m 0 m Expressway Local Road
Local Road – Intersection Expressway Local Road Expressway over Local Road
Expressway – Intersection Expressway over Local Road
Construction noise and pollution Seven years of blight
The wetlands A lifestyle change for the worse
Big box development A future of construction noise and disruption
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