The overnight closures will allow crews to safely install a 6.2 metre tall overhead gantry, which will span the width of the southbound lanes.
Southbound traffic will detour via Middleton Road, through Westchester Drive and return to SH1 via the Churton Park/Glenside onramp.
The first of the new gantries was installed last week between Churton Park and Johnsonville. The steel overhead gantries weigh approximately two tonnes once fitted, and will hold variable message speed signs.
The work is part of an ongoing programme of improvements Waka Kotahi is undertaking to help people safely and easily navigate the state highway network, and keep them informed about any incidents, closures or delays. The work will also improve CCTV and monitoring capabilities for Waka Kotahi to make sure the network is operating safely and efficiently.
While disruptions are expected to be minimal, motorists are advised to plan ahead. Waka Kotahi thanks drivers for their ongoing patience.
The work is dependant on weather conditions and may be postponed at short notice. Updates will be posted on the Waka Kotahi Facebook and Twitter accounts.
For more information follow the Waka Kotahi Wellington Facebook page or visit the Wellington Network Operational Readiness webpage: nzta.govt.nz/wnor

Plan ahead for a safe, enjoyable journey. Keep up to date with:
- COVID-19 services update: nzta.govt.nz/COVID19
- Traffic updates: nzta.govt.nz/traffic/wellington
- Facebook: facebook.com/NZTAWgtn
- Twitter: twitter.com/WakaKotahiWgtn
- Journey planner: journeys.nzta.govt.nz/wellington
- Phone: 0800 4 HIGHWAYS (0800 44 44 49)


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