Motorists using the Karangahake Gorge are being advised to exercise caution.

A Waka Kotahi spokesperson says stop/go traffic management is ongoing on State Highway 2 between Paeroa and Waihi as contractors work to clear a slip and fallen trees.

"Te gorge will need to fully close for up to an hour from 9.30am tomorrow to remove a large tree that is posing a risk to the highway.

"Stop/go traffic management will resume once the 30 metre tall tree has been safely brought down by aborists."

Motorists are encouraged to visit the Waka Kotahi Journey Planner website for updates.

Plan ahead for a safe, enjoyable journey. Keep up to date with:

• Traffic updates: journeys.nzta.govt.nz/traffic
• Facebook: facebook.com/NZTAWaikatoBoP
• Twitter: twitter.com/WakaKotahiWaiBP
• Journey planner: journeys.nzta.govt.nz
• Phone: 0800 4 HIGHWAYS (0800 44 44 49)