Auckland’s state highway network has undergone a significant programme of maintenance and renewal over the summer and autumn, with Auckland System Management (ASM) crews delivering approximately 120 lane kilometres of pavement renewals, alongside a broad programme of maintenance and operational improvements across the network.

ASM partners with NZ Transport Agency Waka Kotahi (NZTA) to operate, manage and maintain the state highway and motorway network across the Auckland region. 

“Despite some challenging weather at times, the team has put in a huge amount of mahi delivering a substantial programme of work while continuing to respond to day-to-day network needs,” says NZTA’s Regional Manager of Maintenance and Operations, Jacqui Hori-Hoult. 

“They’ve worked tirelessly to keep Auckland’s state highway network safe, resilient and operating for the people and businesses who rely on it every day.”

Achievements between 1 December 2025 and 31 May 2026 include 106 kilometres of line marking, 5.1 kilometres of side water channel improvements, 12.1 kilometres of high shoulder removal, the renewal of 8 stormwater ponds and the installation of 290 LED Lights. 

“A standout project this season was the completion of a third southbound lane on State Highway 20 (SH20) beneath the Hillsborough Road overbridge,” Ms Hori-Hoult says. 

“This improvement removes a key bottleneck where the motorway previously reduced from three lanes to two, helping to ease congestion and improve travel reliability for Aucklanders.”

Crews also completed a wide range of important maintenance and resilience works, including: The Auckland Harbour Bridge maintenance programme, including recoating and bridge joint maintenance. Bridge joint replacements on SH20 at Dominion Road and State Highway 1 (SH1) near Mountain Road. Stormwater channel upgrades and drainage works at SH20 Bader Drive. Ongoing stormwater maintenance across more than 20 assets that include soakage holes, catchpits and pipe network between Gillies Avenue and Khyber Pass Road on SH1. Strengthening the network’s drainage improves the city’s resilience to severe weather.

“Drainage improvements are a critical part of protecting our network, particularly in high-risk locations where heavy rainfall can lead to surface flooding and damage to the road structure,” Ms Hori-Hoult says. 

Work is continuing on the SH1 Khyber Pass to Gillies Avenue soakage improvement project, which will improve drainage resilience and address known flooding issues near the Mountain Road bridge. 

To maximise productivity and reduce disruption, ASM is also doing additional paving shifts on Saturday nights across parts of SH1 and State Highway 22 (SH22), helping to clear a backlog of work caused by earlier poor weather.

“The workload doesn’t quit over winter, maintaining Auckland’s network is a 365 days a year job, and we thank road users for their patience while crews work hard to keep the network safe and open.” 

This winter, drivers are encouraged to take extra care in wet conditions, allow additional following distance, watch for crews working on the network and report issues to 0800 4 HIGHWAYS.