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SH1 Auckland to Johnstone Hill Tunnel - delays

Listed: 09 March 2025, 7:16 PM

SH1 Auckland to Johnstone Hill Tunnel

Area Warning: SH 1 Puhoi Off-ramp Northbound

Due to maintenance activity this off-ramp will be closed overnight, 8pm-5am on Mon & Tue nights, 10-11 March. Closures are dependent on various factors, including weather, and may be postponed or cancelled at late notice. Road users should plan accordingly and allow extra time for the detour.

  • Detour route - Use Orewa off-ramp to travel north via Grand Dr & Hibiscus Coast Hwy or continue on SH1 to Warkworth Rbt and use Old SH1 to travel south.
  • Start - 10 Mar 2025 8:00pm
  • End - 12 Mar 2025 5:00am


Road Closure: SH 1 Silverdale Interchange, Southbound

Due to a crash both southbound lanes are blocked after Silverdale off-ramp. Delay your journey or allow extra time for delays and diversions.

  • Detour route - Southbound: Exit at Silverdale off-ramp. re-enter SH1 at Silverdale on-ramp. Northbound: All lanes open. No diversion required.
  • Start 7 Mar 2025 12:15pm