Rolleston improvements work to impact SH1 traffic
NZ Transport Agency Waka Kotahi | 16 Mar 2026 2:41pm | Canterbury
Planned roading construction over coming weekends at a prominent Rolleston intersection is expected to mean some delays and disruption for road users.
As part of the Rolleston Access Improvements project, a new roundabout is being constructed to improve traffic flows at the State Highway 1/Main South Road intersection with Dunns Crossing Road and Walkers Road. This coming weekend and the following, traffic restrictions due to be in place at the intersection (see map below) will enable roading crews to build new roads that will connect to the new roundabout, and to lay asphalt for the roading surface.
SH1 Rolleston access improvements(external link)
During the following scheduled overnight periods, drivers will need to stop on demand at temporary traffic lights on SH1/Main South Road, while a 30km/h temporary speed restriction will be in place:
- 7pm Friday, 20 March – 10am Saturday, 21 March
- 7pm Saturday, 21 March – 10am Sunday, 22 March
- 7pm Sunday, 22 March – 6am Monday, 23 March
- 7pm Friday, 27 March – 10am Saturday, 28 March
- 7pm Saturday, 28 March – 10am Sunday, 29 March
- 7pm Sunday, 29 March – 6am Monday, 30 March
Road users should allow about an additional 10 minutes when travelling in the area during the periods stated above. Two lanes will be open on a temporary gravel surface on the Saturday and Sunday of both weekends, between 10am and 7pm. This work is weather dependent and may need to be rescheduled if the conditions require it.
Doing the SH1 work at night and at weekends, when traffic volumes are lower, minimises the disruption while also making it safer for the roading crews. There will be some noise from trucks and machinery, which the crews will seek to limit as much as possible. Additional lighting will be required in the work area, which will be directed away from houses where possible.
In addition to the SH1 restrictions, access from SH1/Main South Road to Walkers Road (for a rail level crossing upgrade) is due to be closed from Friday 20 March for about three months. Pedestrian access around the intersection work site will be maintained.
We thank people in advance for their patience while this work is carried out, and for being conscious of the safety of roading crews working at the intersection. You can stay up to date on any scheduling changes at our Journey Planner site.