Upcoming maintenance

Weigh‑in‑motion equipment will be installed on Great South Road, Bombay from November 2025 to February 2026. Expect daytime lane restrictions and traffic management near SH1.

Auckland Harbour Bridge summer maintenance runs November 2025 to March 2026 with night lane and ramp closures. Expect delays and consider SH20/SH16 as alternative routes.

Bridge maintenance over Te Onewa Pā until mid-2027. Expect limited or no public access and daytime construction noise.

Summary of upcoming SH20 southbound upgrade works, including night closures, detours and expected impacts for travellers.

Night works on SH16 Royal Road on‑ramp from 18 January to 1 March 2026. Detours via Lincoln Road; expect noise and occasional full southbound closures.

Night works on SH1 between Dragway Road and Te Kauwhata from mid‑January to mid‑February 2026, including resurfacing and barrier maintenance. Detours in place.

Road reconstruction on SH20 from 27 January to 25 February 2026 may cause night closures and detours. Expect noise and check the Journey Planner for updates.