Ground investigations and surveys
We’re starting a programme of important ground investigations and surveys. These will give us a clear picture of the type of soils, rock types and groundwater where we’ll be building the new road. The work will help us design all the junctions, structures and everything we’re building, as well as plan how to build it safely and in a way that will keep costs down. We’ve produced this ground investigations leaflet to explain more details about the tests we will be carrying out.
The majority of work will take place on private property such as farmland and industrial sites. Any work in public areas will look very similar to normal road works, with barriers around a small section of a pavement or road, with a diversion around it for traffic or pedestrians. We will keep local residents and landowners informed about where we’re working.
Frequently asked questions
More details on each different technique being used can be found here in our ground investigations and surveys guide.
We aim to start our ground investigations in late August and finish in December 2019. We also plan to carry out initial archaeological surveys. These will take up to eight months to complete and are likely to begin in late September 2019.
The majority of our work will be carried out during normal working hours (8am – 6pm), between Monday and Friday. There will be some short-term single-lane closures required around the Black Cat and Caxton Gibbet junctions so we can safely access work sites and move equipment. These lane closures will take place at night (8pm – 6am) to minimise disruption to those travelling. We are not planning to work on weekends. However, should it be necessary, this will be restricted to Saturday (8am – 1pm).
The map below shows the broad area where we will be carrying out our investigations and surveys.
Any work in public areas will look very similar to normal road works, with safety barriers around a small section of a pavement or road, with a diversion around it for traffic or pedestrians.
If work is going to take place next to residential properties, we will write to those properties in advance to let them know what is happening and when.
The percussion bore hole rig involves a long, steel pipe that is hammered into hard ground to keep it open, in order to take a sample of the deep soil. The sound of the operation will not be noticeable from more than a few hundred metres away and the works will take place for short durations at each site.
It is not anticipated that the noise will be disruptive during the daytime since the ambient noise levels from the traffic on the road will be significantly higher. Where we think there will be a potential noise impact, such as at night time, we will take necessary measures to mitigate this as much as possible.
Worried about work near your property? Get in touch.
Many of the site locations will not be visible from the road; however in places you may be able to see our vans and rigs working within the fields.
More information, including images of the ground investigation techniques we are using, is available in our Ground Investigations leaflet, pages 8 and 9.
Our contractors are:
- MOLA Headland Infrastructure
- Strata Geotechnics
There is also the requirement for some off-peak traffic management to allow work on side roads across the scheme in the day time. Throughout the works we will avoid any full road closures, traffic restrictions around the junctions, and diversions.
Vehicles are refuelled at the main compound, not on site, and the material used to backfill boreholes is made from a naturally inert material. The works areas are small and unobtrusive and the amount of waste is minimal. The trial pits, for example, are backfilled with the as-dug material.