Lower Thames Crossing – Utility Trial Trenching along the A2
Balfour Beatty, on behalf of Highways England (HE), will be starting utility survey works on the A2 near Inn on the Lake that may require them to temporarily reduce the number of lanes from 4 down to 3.
The works will be carried out in phases, with Phase 1 anticipated to take one month and Phase 2, if required, could take up to three months.
Phase 1 will only close the hard shoulder with 4 lanes of traffic still open. However, on the 25th January there will be a full lane closure for one night on this section of the A2 (coastbound from Hever Court Road roundabout) with full diversion signs in place.
If during the first phase of digging HE are unable to identify the gas main, they will then have to dig a deeper excavation (Phase 2). If this is required, HE would also need to close a small section of lane one on the A2 east bound carriageway. This is due to the proximity to the deep excavation and for the safety of staff. The closure of lane one would be between the Gravesend East junction and Cobham and Shorne. Traffic would also be reduced to 50mph between these points.
These surveys are to help HE better understand the locations of existing underground utilities along and near to the proposed route of the Lower Thames Crossing. This will help them plan utility diversions and where they would be required to build the project.
For more information on these survey activities, please visit the HE website Highways England – Utility Trial Trenching for the Lower Thames Crossing .
Thank you for your continued support.
Higham Parish Council
Lower Thames Crossing – Ground Surveys continue
Highways England (HE) is currently undertaking a series of surveys at locations throughout North Kent and Essex to help improve their proposals and support the Development Consent Order application.
As well as continuing with ground investigations, archaeological trial trenching and utility trial trenching, HE will now also be carrying out nail surveys which involves installing small survey nails along and near to the proposed route.
What are they doing?
This mainly consists of drilling boreholes with a rig through soils up to depths of 60m, to identify the geology, obtain samples, and carry out tests.
Archaeological trial trenching
HE are digging shallow trenches with mechanical excavators to assess the archaeological features of a site. The trenches are approximately 30 metres long and 2 metres wide.
Utility trial trenching
HE are digging small trenches either by hand-digging or with the use of a vacuum excavator, before scanning for existing belowground utilities.
HE are installing survey nails to identify the geographic coordinates of the proposed route and associated works. They are small in size and designed to ensure that they are not a trip hazard.
Where will the investigations take place?
The borehole and trench locations are mainly on private farmland along or near to the proposed route.
For some of the utilities surveys, the works can also include public roads. The survey nails will be installed on private land and public pathways or roads.
When will the work take place?
This phase of surveys will continue until early 2021. Most of the work will take place Monday to Friday, between 8am and 6pm with the possibility of some weekends. HE will continue to write to nearby residents in advance to let the know what is happening and when.
For further information visit the Highways England Communities page here:
Higham Parish Council