Nighworks and road closures are being planned for State Highway 29 tonight.

Waka Kotahi NZ Transport Angecy says urgent asphalt road repairs are required at the intersection of SH29 and SH28 on the western side of the Kaimai Range.

"The repairs will take place tonight with associated one-way closures," says a spokesperson for the roading agency.

"Road users will need to take an alternative route at set times during the night.

"There will be a reduced speed limit of 30km/hr through the worksite."

The alternative routes that will be in place are as follows:

- Northbound via, SH2, SH26, and SH24 or SH27 (and vice versa), this detour is not HPMV compliant.

- Southbound via, SH2, SH29, SH36, SH5 and SH1 (and vice versa), this detour is not HPMV compliant.

- Southbound detour suitable for HPMV is via, SH2, SH33, SH5, SH1 and SH29 (and vice versa)

The closure points on the western (Matamata) side of the Kaimai Range are at the intersection of SH29/SH24 and the intersection of SH29/SH28, and on the eastern (Tauranga) side of the Kaimai Range at the intersection of SH29/Cambridge Road.

Motorists are advised to consider these closures when planning their journey, and where possible take the alternative detour routes, allow extra time and visit the Waka Kotahi Journey Planner website journeys.nzta.govt.nz before leaving home to view the latest road conditions.

Residents and Emergency Services access will be maintained at all times, however residents are advised to liaise with the traffic control teams on-site.

Other maintenance activities will be undertaken at the same time as the closure. Waka Kotahi NZ Transport Agency acknowledges that this work and the temporary traffic management are disruptive, however this is the safest and most effective way to undertake these repairs.