Cumberland Road was closed immediately in late January after parts of the river wall and supporting ground collapsed.
Engineers have since been testing the strength of the road in preparation for the arrival of specialist equipment required to carry out protection work on the exposed ground at the river wall.
This testing is necessary to ensure stabilisation works can be carried out safely without further risk to the immediate area. Only after these results have been assessed and conditions deemed safe will work to protect against further tidal erosion begin.
This work is expected to last for around a month, with the monitoring of any road movement continuing daily, after which a limited reopening of the road will be considered.
Councillor Kye Dudd, Cabinet Member for Transport, said: “Our priority continues to be making sure the area is safe and that Cumberland Road is secure so that it can be reopened in confidence that no further issues will arise.
“Once the road is judged to have been stabilised sufficiently, a decision over whether to partially open it for public transport, including metrobus, and cyclists will be considered.
“We will continue to prioritise safety and daily monitoring will continue to detect any further movement.’’
Plans for the £9m refurbishment of the river wall at Cumberland Road are at an advanced stage with two companies bidding to carry out the works. Data collected from monitoring Cumberland Road is being fed into these long term designs with the work expected to begin in the summer.