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How can I fi nd out more information?
For further details on the scheme construction over the coming months please visit the project website.
You can also sign up to receive email updates from our road project page:
www.highways.gov.uk/roads/road-projects/A21-Tonbridge-to-Pembury-Dualling
You can also get in touch by contacting:
The Public Liaison Offi cer:
Natalie O’ Dwyer
Email:
Natalie.O’[email protected]
Telephone:
07971 472517
Post:
Balfour Beatty
A21 Project Offi ce,
Pembury Road
Pembury,
TN11 0QE
Project team contact details:
The project team can be contacted in the following ways:
Email: [email protected]
Anne-Marie Palmer, Project Manager
Thomas Selby, Assistant Project Manager
Highways England information line:
0300 123 5000
A21Tonbridge to Pembury
Scheme newsletter
November 2016
New northbound and southbound carriageway
in the central section of the scheme
Soil nailing
Soil nailing works started at Burgess Rough
in May, which is one of three areas to be soil
nailed across the project.
Soil nailing is a form of embankment/slope stabilisation and strengthening where nails are
formed by drilling and grouting into the side of embankments. A facing mesh is then installed over the
entire slope face to hold it in place. Across the A21 project approximately 1700 nails will be installed
corresponding to a length of over 22,000 linear metres of soil nails.
Soil nailing is a crucial part of enabling suffi cient space to widen the existing A21 to 2 lanes
in both directions.
Work carried out in October
We have constructed the new northbound carriageway at the
northern end of the scheme and have been constructing the new shared footpath and
cycleway/bridle path through the central section of the scheme.
We closed the A21 overnight for 2 nights to move traffi c onto the new northbound carriageway, which
was carried out in 2 phases. Traffi c was moved on to the central section fi rst (Castle Hill to Fairthorne)
and then the northern section (Vauxhall lane junction to Castle hill) in the last week of October.
These 2 phases are now complete and traffi c is running on the northbound carriageway from north of
Half Moon lane through to existing Vauxhall interchange.
The total section of carriageway that is now open is approximately
1,800 metres.
Welcome to the seventh issue of the A21 Tonbridge to Pembury Dualling newsletter. This is the fourth newsletter since we started work in September 2014 and includes details of what we have been doing in the last few months. We hope you find it an informative and enjoyable read.
Unfortunately due to the levels of contamination found (and described below) we will not be able to finish the project as previously advertised in December 2016. We are constantly reviewing the schedule to see how we can regain some of the lost time but at present, the scheme will be completed in summer 2017.
Soil nailing works at
Burgess Rough
Earthworks and contamination
In March we discovered earth due for removal was contaminated and required extra
investigation and treatment before it could be safely removed and transported. Since its discovery,
the team has removed over 35,000 tonnes of contaminated soils.
The material found is contaminated with asbestos and heavy metals and has been transported to
landfi ll or treatment facilities in Cambridge or Sevenoaks – this is dependant on the material type.
Friable asbestos (a type of brittle asbestos that can crumble with little force or pressure) has been found
and this type of contamination requires additional control measures to safely remove and transport.
If the friable asbestos is not handled correctly, the material could be released into the surrounding
environment and prove to be hazardous.
Bluebells − translocation
A mass of bluebells and other plants including bugle, dog violet, wooden anemone,
rubus fructose and yellow pimpernel have flourished in the translocated soils indicating the
success of the translocation.
Regrettably 9 hectares of ancient woodland had to be felled to allow the new road to be
built, but to compensate for this loss, 18 hectares are being created, of which 9 hectares will
be comprised of ancient woodland soils and some coppice stools which will be translocated
from within the site. The existing seed banks that were originally within the soils are being
treated as a habitat to ensure that the soils continue to flourish.
Bluebells in bloom
in Burgess Rough
