Dual-lane roundabouts have been approved by the Selwyn District Council for the Springs and Marshs Rds and Shands and Blakes Rds intersections.
They are expected to be substantially completed next year.
The Shands and Blakes Rds intersection was named one of the worst in Canterbury in 2018 based on crash statistics.
There has been two fatal, one serious and nine minor crashes at the Shands and Blakes Rds intersection since 2011. Two people died in a crash there in February 2018.
There has also been one serious crash and two non-injury crashes at the Springs and Marshs Rds intersection. Rochelle Margaret Roozen, 41, was also killed at the intersection while cycling to work in 2010.
“I absolutely support traffic safety improvements, especially around Prebbleton, as this area continues to grow,” chairman Peter Hunter said.
The construction contract will now be tendered and procurement of detailed designs will begin.
A report presented at a district council meeting last week read: “Detailed design work needs to be advanced without further delay so the project can be substantially completed by mid-2021."
Said a NZ Transport Agency spokeswoman: “Higher traffic volumes at the intersection as part of the construction of the Southern Motorway is leading to an increase in safety issues, particularly for traffic turning out of Marshs Rd.”
The two roundabouts are expected to cost $9.3 million with 75 per cent of that subsidised by NZTA.
The district council and Christchurch City Council will split the remaining 25 per cent cost of the Springs and Marshs Rds intersection.
The district council will fund the remaining 25 per cent cost of the Shands and Blakes Rds intersection.
