The retaining walls were built in the early 19th century and do an essential job, supporting the main A6 carriageway along the banks of the River Derwent.
We're responsible for the repair and maintenance of approximately 1,200 miles of retaining walls across the county.
The repair programme
Our initial site investigations helped us to identify the most effective way to carry out the repairs, while conserving the appearance of the walls for future generations.
Repairs will be carried out at 6 sites along the 4-mile stretch of the A6 and include:
- rebuilding, repointing and replacing damaged stones, using local sourced Derbyshire stone
- installing new, steel ground anchors up to 6 metres long hammered into the ground to reinforce the walls, to provide additional strength and stability
When we carry out the repairs, we will be using temporary traffic lights as the A6 needs to be reduced to one lane in the work locations due to the heavy lifting equipment, machinery and works on site. Much of the works are below road height due to being on the retaining walls, so won't be visible as you pass.
The lane closures will be in place 24 hours a day, 7 days a week at each section until the repairs have been completed. Subject to progress and weather conditions, the lights will be removed at weekends to help minimise delays.
The 6 repair sites
The repairs to the retaining walls will be carried out at the following 6 locations, subject to weather conditions and local environmental issues:
- Derwent Gardens between Lovers Walk and Clifton Road
- Derby Road near the Gulf Petrol Station
- Derby Road 700m south of High Peak Junction
- Derby Road 500m north of its junction with Lathkill Lane
- Derby Road 600m north of High Peak Junction
- Matlock Road from Lathkill Lane heading south parallel with Lea Lane
Road drain sensors
As part of the programme, we've installed new smart technology sensors in the road drainage gullies. The sensors will alert our team about any blockages to help us take action to minimise surface water flooding.
The sensors constantly monitor the level of water in the road drain and if it starts to rise, extra cleaning and gulley emptying can be carried out to remove any blockages to minimise the risk of surface water flooding.
Four sensors have been installed as part of a trial, including 2 at the busy Cromford Hill junction with the A6 Derby Road which is prone to flooding.
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