We are carrying out a huge programme of ground investigations and surveys under the Thames and across Essex, Thurrock, and Kent, to help us design the new crossing.
The two types of GPR we will be using are
- Push GPR
Push GPR is similar to a lawnmower in appearance and is used on paths and walkways where an operative will push the equipment along to collect information.
- Mobile GPR
Mobile GPR uses equipment attached to a van or tractor. This will be used on the roads to carry out the non-invasive surveys. We will be doing the majority of the works using this method.
What to expect
Our priority is to carry out this programme of work in a way that will have the smallest possible impact on the community.
The works will be carried out in two phases with the first phase involving signage and an escort and the second phase involving some traffic management. (Please see the map below for more detail)
- The works are non-invasive and will not cause any noise disruption.
- Due to the nature of the works, there will be flashing lights which are used on our works vehicles for the safety of both the workforce and the road users. As the works are mobile, the vehicles will be continuously moving, so any disruption caused by these will be kept to a minimum.
- Access to properties will be maintained throughout the duration of the works.
- At times, there will be lane closures with two-way traffic lights in place. This is required for the safety of both the work force and the road users.
- The working hours for the mobile GPR (vehicles travelling at 10 mph/15kph) will take place during day time off-peak hours, Monday to Friday or carried out at night-time in high traffic areas, between 8pm and 6am, Monday to Friday.
- We expect the works to continue until mid-December.
- Push GPR – Equipment pushed on foot. Traffic escorted.
- Mobile GPR (signs/escort) – Survey van followed by traffic management vehicle. Some signage.
- Mobile GPR (traffic lights) – Lane closures with temporary traffic lights or stop go boards.
- Mobile GPR (ring management) – At J29 on M25 we will close the inner ring and then the outer ring of the roundabout. Survey completed by van.
- Mobile GPR (mobile works on high speed roads) – Multiple traffic management vehicles, approx. 5 or 6 at intervals pushing traffic across lanes. These will all be on nights. Limited to A2/M2 and M25. Survey completed by van.
Frequently asked questions
(See map above)
This will help us to improve our proposals and to develop our application for the DCO.