Authorities will assess the landslide risk on Victoria's Great Ocean Road after the tourist route was again closed.

Rains in the area on Sunday increased the chance of landslides, closing the road from The Boulevarde, Wye River to Stanway Drive Separation Creek.

Traffic management points are being set up at Hird Street, Lorne, and Great Ocean Road, Skenes Creek, to alert drivers and detour signage is in place.

The road is not expected to reopen before Monday morning, when the situation will be reassessed.