Work will be continuing on State Highway 1 Transmission Gully next week with night closures and full north and south lane closures planned at night.

On Monday and Tuesday nights (27 & 28 January), Transmission Gully will be closed in both directions from Linden to the State Highway 58 Interchange, weather permitting. 

Because the motorway is a key transport route, drivers are urged to stay up to date on the works and plan their journeys accordingly.

With lane closures and temporary speed limits in place along the route during the day, drivers can expect delays, particularly during peak traffic and commuting periods. State Highway 59 is available as an alternative route and road users are encouraged to use it where possible.

Weather permitting, road rebuild works at Rainbow Bridge will be completed this weekend. Once this is complete, road crews will move to Waitangirua to complete a road rebuild similar to that completed at  Rainbow Bridge.

Contractors will be chipsealing the motorway’s southbound lanes, between 9 pm and 4:30 am on Sunday to Tuesday nights (25-27 January).

Chipsealing will also be underway in both directions, between Linden and the SH58 interchange on Monday and Tuesday nights. Please use SH59 as the detour

On Wednesday and Thursday nights crews will chipseal from Linden to Paekākāriki northbound, Detour via SH59.

Resurfacing and chipseal works are weather-dependent and schedules may change if wet weather occurs.

Works schedule and detour maps

Southbound works:

• Sunday, 25 January, to Tuesday, 27 January. 9 pm – 4:30 am.
  • SH1 Transmission Gully CLOSED between SH58 and Linden.
  • Southbound traffic detour via SH59.

Northbound works:

• Monday, 26 January and Tuesday, 27 January. 9 pm – 7 am.
  • SH1 Transmission Gully CLOSED between Linden and SH58 interchange.
  • Northbound traffic detour via SH59.

• Wednesday, 28 January and Thursday, 29 January. 9 pm – 7 am.
  • SH1 Transmission Gully CLOSED between Linden and Paekākariki.
  • Northbound traffic detour via SH59.

Advice for drivers

Driving on new chipseal

When new chipseal is laid the loose chips are swept up and the site is road marked, normally within 48 hours of sealing, at which point the temporary speed limit is increased from 30 km/h to 50km/h.

Further sealing chip compaction occurs by managing the traffic over the site, and after a few days the site is swept again and the temporary speed limit removed.

It is critical for drivers to follow all temporary speed limits in areas where new chipseal has been laid. Travelling at the 30 km/h speed limit is essential. Drive too fast and you may flick up stone chips that can damage other vehicles. Drive too slowly and there is a risk the road surface will lift and stick to your vehicle.

When driving on newly laid surfaces sure your following distance is at least two car lengths. Avoid hard braking or sharp turns - gentle driving helps embed the chips.

Always drive to the conditions. When there is loose chip in areas outside of temporary speed limit zones, reduce your speed. This helps keep you safe and also reduces the risk of loose chips damaging other vehicles.

Wet weather and chipsealing

For chipseal to be laid effectively, it has to be done while the weather is fine. Warm temperatures and dry air help the new seal stick to the road surface and help ensure the new seal becomes strong and long lasting. Wet road conditions during sealing will affect the bond between the bitumen and the road, leading to chip seal failures.

When wet weather occurs, contractors will have to postpone road resurfacing works. This is why it is critical drivers check road conditions before they travel. Schedules are weather-dependent and can change at short notice.