North Yorkshire County Council has said that some repair work on the A59 has already started despite ground investigation work only being completed last week.
The road was closed on 30 May following ground movements below the road and the council has said that work is underway on a final design solution that will allow the route to reopen while proposals to re-route the road are considered.
In a statement, the council said: “Certain elements of the repair work are required regardless of the final design solution, so these will be initiated immediately. These works will primarily include reinforcing the existing retaining wall.
“It is unclear at this point exactly how long these initial works will take, but estimates suggest the work could be completed in three weeks. The interim benefit of the work could be to facilitate the opening of the A59 to single-line traffic under traffic light control.”
The council has said that it hopes to have this temporary solution in place before the Great Yorkshire Show, which starts on 10 July, but has warned that further closures are likely to be needed to undertake permanent stabilisation work.
Plans to realign the route are currently under development following a public last year and these plans are expected to be put before the council soon in order to start work on site by 2020.