Embracing the Environment Whau Symposium Our River Our Future 25 - - PowerPoint PPT Presentation

Embracing the Environment

Whau Symposium – Our River Our Future 25 September 2013

Agenda

• Introduction
• Western Ring Route - context and overview
• Causeway Upgrade Project - overview
• Environmental monitoring and mitigation
• Find out more, and Causeway News
• Discussion

Western Ring Route – SH 6

• Improved and more reliable

journey times

• Direct motorway access to

the airport

• An alternative route to SH1

around Auckland

• Co-ordinated with Auckland

Transport and public transport improvements

• One of the ‘Roads of

National Significance’

Waterview to Te Atatu

Western Ring Route – SH16

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HEADING TWO STYLE

Programme update

• Causeway Alliance of the NZ Transport Agency, AECOM,

Coffey, Fulton Hogan, Leighton Contractors and Sinclair Knight Merz are delivering the project for the Transport Agency

• Sept 2013 - Causeway construction continues
• October 2013 to Sept 2015 – Whau bridge widening
• Late 2016 – Causeway upgrade due to be completed
• Early 2017 - Waterview tunnels open

Causeway Alliance

• NZ Transport Agency
• AECOM
• Fulton Hogan
• Leighton Contractors
• Sinclair Knight Merz
• Coffey

A collaborative approach to our work gives better value for money and greater benefits for our customers

Causeway – storms and tides

Causeway Upgrade - scope

Existing SH16 Causeway New SH16 Causeway

3 lanes westbound 5 lanes Waterview to Rosebank 4 lanes Rosebank to Te Atatu 3 lanes eastbound 4 lanes eastbound Inadequate bus shoulders Extended and widened bus shoulders both sides of motorway Pedestrian/cycleway

Enhanced pedestrian/cycleway

Flooding occurrences

Raised 1.5m for flood protection

Existing Causeway

Causeway improvements

(progressively from 0 months to -/+ 2 years)

Causeway improvements

Causeway improvements

(2 to 2.5 years)

Causeway improvements

(2.5 - 3 years)

Causeway – final layout

Whau river and Te Atatu site offices (Taupuni)

Te Atatu site offices & Whau bridge

Kaumatua Eru Thompson and Pita Pou

Whau bridge - access

Whau bridge – ground improvements

Whau bridge to Rosebank Domain

Whau bridge widening – cross section

• Broad range of experts review construction activities
• Pre-clearance and ongoing inspections for lizards,

vegetation, trees and archaeology

• Stormwater, erosion/sediment control, coastal area

protection established before works begin and regular inspections

• Ongoing monitoring of earthworks compliance,

contaminated soils, noise, air quality, marine ecology and birds

• Monitoring results to be issued to CLG

Whau bridge – shared path widening

Planting and trees

• Coastal experience -

native coastal species

• Eco-sourced from

Tamaki Ecological District

• Appropriate ecotypes
• Reference to existing

vegetation

• Pohutukawa at gateway

locations

Environmental monitoring - overview

• Broad range of experts review construction activities
• Pre-clearance and ongoing inspections for lizards,

vegetation, trees and archaeology

• Stormwater, erosion/sediment control, coastal area

protection established before works begin and regular inspections

• Ongoing monitoring of earthworks compliance,

contaminated soils, noise, air quality, marine ecology and birds

• Monitoring results to be issued to Community Liaison

Group

Te Atatu Construction Yard - Bird life

• Dotterel nest found
• n earth stockpile in

Construction yard

• Fenced off to protect
• Advice being sought

from DOC

Environmental mitigation and legacy

• Runoff receives a high standard of stormwater treatment
• Landscape planting (grass swale & path edge, revetment)
• Further mitigation options/outcomes being considered, eg:
• Increased community awareness/education
• Improved access to marine reserve, under Whau bridge
• Viewing areas and seating along shared path
• Greater plant and animal pest control
• Celebration of heritage and culture
• Revegetation of Traherne Island

How to find out more

• Community Liaison Group (CLG) meetings
• Freephone 0800 444 449 | Mention “Causeway”
• Causeway News – regular project email updates
• Project website, Google: SH16causeway
• Info about upcoming work: media, advertising
• Separate meetings for site or issue specific details
• Communications and Stakeholder Manager, contact:
• elizabeth.collins@sh16causeway.co.nz

Summary

• Construction progressively moving along SH16 to

upgrade the corridor by late 2016

• Causeway Alliance is committed to working closely with

the community and monitoring works to minimise effects

• n environment
• Project outcome is to ‘tread lightly’ on the surrounding

environment and marine reserve

• Reviewing options for including further environmental

mitigation projects

Questions | Discussion