Work on the A57 Snake Pass is going to plan and could reopen on Saturday (22 October), Derbyshire County Council has confirmed.
The busy route has been closed since 26 September so that specialist contractors working for the county council can carry out an investigation into the causes of the landslip at Alport.
The road has been closed to all users from Doctors Gate to Hagg Farm, a distance of 5.6 miles.
The A57 Snake Pass was closed in February following a battering from Storm Eunice and Storm Franklin. On 29 March, it was reopened to all vehicles, with a weight limit of 7.5 tonnes. There are traffic lights and a 20 mph speed restriction at the location of all three landslips.
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