Dunedin City Adapting to Sea Level Rise - A Transport Perspective
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Dunedin City Adapting to Sea Level Rise – A Transport Perspective
Dunedin City
Climate Change Challenges - More frequent weather events ($23.5m flood recovery spend in last 5 years) - Rising sea levels lead to more BAU recovery work - Large amount of coastal / low lying infrastructure (82km of coastal roads) - 2680 homes within 50cm of sea level or less
Strategic Objectives
Transport Strategy
• Focus on a resilient network
• Transport network provides a platform for
sustainable transport choices
Te Ao Turoa (Environment Strategy)
• Dunedin is resilient and carbon zero (2050)
• Dunedin has a healthy environment
On 25 June 2019 DCC brought forward its target
to be a net carbon zero city from 2050 to 2030.
What does this mean in practice?
Dunedin Emissions
Case Study 1 –Peninsula Connection .
The Location
Otago Peninsula
• Population 4500 and growing
• High vehicle ownership rates
• Low road is critical infrastructure for
residents and tourists
• Low and high road are highly
susceptible to weather events
• Well documented safety issues
Project Objectives
• Increase resilience
• Improve safety and accessibility for all
users
• Provide walking and cycling
infrastructure
• Efficiency and travel time gains
The Project
Details
• $70m project
• Widening of the road by 6m
• Add a shared path and shoulders along the length
• 170,000m2 of pavement
• 240,000m3 of bulk fill
• 47,000m2 of facing rock
• Road raised up to 1.5m in places
Resilience
• Minimum road height established by resource consent
o Sections of existing road are inundated in high tides
o Unstable vegetation removed
• Promotes alternative transport modes through the
addition of a shared path and safer access to bus stops
• Connects communities which were isolated and reliant on
motor vehicle transport
Community Outcomes Improving the resilience of infrastructure can provide opportunities for great community outcomes
Case Study 2 - South Dunedin .
A Changing Environment
A Changing Environment
South Dunedin today…
South Dunedin Infrastructure • 71km of road • 120km of footpath • 1.5km of walkways • 65km of stormwater network • 77km of wastewater network • 103km of water supply network
Asset Value for South Dunedin Adapted from Valuation and Rapid Cost Benefit Tool: South Dunedin (Rationale Limited 2013)
Scenario
Transport • What is the future role of the transport network? • What does good investment look like? • How do me manage immediate needs while planning for the future? • Are we doing everything we can to prevent further flood events?
SOUTH DUNEDIN FUTURE PROGRAMME
“To develop and deliver a programme
- that effectively responds to the climate driven challenges facing
South Dunedin,
- while recognising the broader impacts across Dunedin and the
wider region.
The programme will engage the community, central government
and stakeholders in:
- understanding the context and
- to identify options to adapt to further changes in South
Dunedin’s natural environment
through a community-engaged response”.Where to next
• Be realistic with infrastructure projects and their costs
• Investing in repairs / renewals that will last
• Linking these climate change challenges to
opportunities for improved community outcomesYou can also read
