Waka Kotahi NZ Transport Agency
27 February 2026, 1:35 AM

Below is a list of programmed work on Southland state highways next week, and this is also mapped HERE.
Key renewal sites in Southland currently underway:
SH90 Waikaka Valley highway between Waikaka Road and Cunningham Road – Construction work will continue until late March. Delays of 5-10 minutes
SH99 Wallacetown – culvert strengthening – 2-week FULL ROAD CLOSURE from 6.30am on February 23rd to 7pm on March 9th. All vehicles (HPMV including 58tonne) to detour via Ryal Bush-Wallacetown Road/Collinson Road/SH6 Winton-Lorneville highway – detour adds approx. 10 minutes to your journey. Following the completion of the culvert strengthening, the road renewal will take place for 4 weeks. Traffic management will be one lane with temporary traffic lights – expect delays of 15-20 minutes during this time. Please do not use Branxholme-Makarewa Road as an alternative detour route – this is not suitable for highway traffic.
Upcoming renewal work
Highways South maintenance work:
Roadmarking (taking place under mobile traffic management)
**Programmed work may be delayed due to weather/other factors.
More information at:
NZTA Journeys website - https://www.journeys.nzta.govt.nz/journey-planner
Freight Impact Register - https://www.nzta.govt.nz/commercial-driving/trucks-and-tow-trucks/potential-restrictions-affecting-freight/ - download and filter the region for ‘Southland’. This will indicate any upcoming work in the next fortnight which have closures, detours or width restrictions for freight.