TRL aids Highways Agency with M2 motorway hole investigation

The UK’s transport research Laboratory (TRL) provided a rapid response when asked for help as part of the investigation of the recent appearance of a hole in the central reservation of the M2 between junctions 5 near Sittingbourne and 6, near Faversham. The hole that appeared is believed to be a dene hole; an historic man made hole which may have been used to mine for chalk hundreds of years ago. The hole was filled in when the M2 was constructed, but recent wet weather contributed to the destabilisati
February 21, 2014 Read time: 2 mins
The UK’s transport research Laboratory (491 TRL) provided a rapid response when asked for help as part of the investigation of the recent appearance of a hole in the central reservation of the M2 between junctions 5 near Sittingbourne and 6, near Faversham.  

The hole that appeared is believed to be a dene hole; an historic man made hole which may have been used to mine for chalk hundreds of years ago. The hole was filled in when the M2 was constructed, but recent wet weather contributed to the destabilisation of the ground, causing the hole to appear.

Within a few hours of being asked for assistance, TRL was able to mobilise a team to be on site to provide two coring rigs and staff to undertake investigations of the carriageway in one lane either side of the hole to establish its integrity. The carriageway is constructed of jointed reinforced concrete with a thick asphalt overlay.

Two TRL teams working round the clock cored approximately 38 holes to help determine the extent of the problem.

The 503 Highways Agency has now stabilised the hole with forty tonnes of pea shingle and further geotechnical investigations by TRL confirm that the ground beneath the M2 is safe for traffic to use.

Further resurfacing work has finished, with all lanes now re-opened, nine days after the 15ft deep hole swallowed up the road surface.

For more information on companies in this article

Related Content

  • US DOTs introduce measures to stop wrong-way driving
    March 28, 2018
    Wrong-way driving (WWD) is a remarkably innocuous term for incidents that all too often cause some of the worst accidents that emergency services have to deal with. Several US states are now taking steps to minimise the problem, as Alan Dron finds out. You’re driving down a highway at night when you see approaching headlights. You initially assume they are merely those of an oncoming car on the opposite carriageway. It’s only when they are within 200 yards or so that you realise that the other driver is in
    Read More
  • Idaho adds human dimension to winter savings
    September 23, 2014
    Idaho leverages the increased capability and reliability of its road weather sensor network to reduce costs and prevent accidents. Weather-related accidents can form a significant chunk of an authorities’ annual road casualty statistics. While authorities cannot control the weather, the technology exists to monitor the road conditions and react with warnings to motorists and the treatment of icy or snow-covered roads. However, with all capital expenditure now placed under the microscope of public scrutiny,
    Read More
  • Don’t drive drunk – or use a hands-free phone
    August 29, 2019
    Despite law changes, drivers’ bad habits have been creeping back in. TRL’s Dr Shaun Helman tells Adam Hill why using a phone at the wheel is just as distracting as driving after a few drinks esearch from as far back as 2002 (see box) suggests that driving while making a phone call – either hands-free or holding a handset to your ear – creates the same amount of distraction as being drunk behind the wheel. While it is notoriously hard to predict how alcohol will affect an individual (due to the speed of
    Read More
  • Government green lights road and rail improvements
    July 19, 2013
    UK Transport Secretary Patrick McLoughlin has confirmed a £1.2 billion order for more state of-the art trains to transform rail travel on one of Britain’s busiest intercity routes. The 270 carriages will be manufactured in Britain by Hitachi Rail Europe as part of the government’s overall £5.8 billion Intercity Express Programme (IEP). The trains will operate on the East Coast Main Line from 2019 and will deliver significant benefits to passengers, including boosting capacity by 18 per cent, improving trai
    Read More

Highlighted Content