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Southern Corridor Improvements

Our Role

SMEC was engaged in a joint venture with GHD to provide design services for OHL Construction Pacific in the tender design bid for Southern Corridor Improvements.

SMEC's scope of work covered:

  • Geometrics
  • Drainage
  • Signage
  • Barriers
  • Utilities
  • Coastal processes
  • Intelligent traffic system

Project Overview

The Southern Corridor Improvements Project covers a stretch of the Auckland Southern Motorway (SH1) from the SH20/SH1interchange at Manukau to the Papakura interchange, approximately 9 km away.

Project scope of work included:

  • Motorway widening
  • Additional lanes in both directions
  • 16 major structures
  • Upgraded grade separated interchange
  • Working within a rail corridor
  • 4.5 km shared use pedestrian/cycle path
  • Architectural designed overbridge
  • Urban design and landscape works.

New Zealand
Technical Area:
OHL Construction Pacific

Learn More

To learn more about our Intelligent Transport Systems capabilities please fill out the form below and one of our team will be in touch.