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Project introduction

New traffic signals will make it easier and safer for people to get to the shops, local businesses, school and community facilities across the highway and rail line and strengthen community connections between east and west Tinwald.

Connecting the community and making it easier to get around Tinwald

The business case for the Tinwald Corridor Improvements is complete and work on detailed design is about to start.

Waka Kotahi is delivering this project as part of the New Zealand Upgrade Programme, which will provide more travel choices and help people get where they’re going safely.

New Zealand Upgrade Programme - Canterbury package

The upgrade to the SH1/Lagmhor Road/Agnes Street intersection and adjacent streets will make it safer and easier for people in Tinwald to cross between east and west residential areas – in cars, walking or by bike. It will also mean crossing and getting on and off the highway is easier at peak travel times.

Improved facilities for cyclists and pedestrians will make it safer and easier for people from west Tinwald to visit local shops and businesses, instead of travelling to Ashburton, as many do now.

The improvements will help ease congestion and highway traffic flow through to Ashburton.

The project design also supports the wider transport network (agriculture, industry, freight and rail requirements), accommodates growth to the south of Tinwald and starts to establish the travel routes and connections which will include Ashburton's second urban bridge in the long-term.

  • Project type

    Road improvements
  • Project status

    Design

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Key features

  • Traffic from the Lake Hood area will be encouraged to use  McMurdo Street and the traffic signals at Agnes Street as the safest route for turning right onto the highway.

  • The northbound state highway right turn bay into Graham Street will be widened, and right turns will still be possible out of Graham Street with some additional gaps provided from the new signals at Agnes Street.

  • Agnes and Thomson Street will be promoted as the safest route to Tinwald Primary School.

  • Changes to Melcombe Street will create a safer cycle route to the Ashburton River Bridge and the rail viaduct will be made safer as traffic will only be one way and left turn only onto the highway.

  • The current northbound highway cycle lane will be removed and the centre flush median widened to make right turns from local streets easier and safer.

Public engagement

During April 2021, we asked the public for feedback about proposed changes to the SH1 corridor through Tinwald.

This feedback was assessed, and further analysis was undertaken.

Some key changes include removing the proposed raised safety platform at the signalised intersection, refining the intersection and signal design, better provision for pedestrians and cyclists to get to school and along Melcombe Street and under the rail viaduct through to the Ashburton River Bridge.

Engagement summary report [PDF, 936 KB]   

View online feedback(external link)

SH1 Tinwald corridor improvements NZ Upgrade logo