The Gwydir Highway is closed in both directions due to a bushfire burning 60 kilometres west of Grafton.
The Highway has been closed 10 kilometres west of Jackadgery over the Gibraltar Range due to rocks falling on the road and heavy smoke from firefighters back burning near the area..
The "Little Gundah fire has burnt around 2,600 hectares so far.
The bush fire has closed direct travel between Glen Innes and Grafton.
Fire crews are on site of the fire.
Motorists needing to travel between Grafton and Glen Innes are advised to use the Summerland Way to Casino, Bruxner Highway to Tenterfield and the New England Highway to Glen Innes, however authorities have warned drivers the alternative route will add significant travel time.