This article describes the route, design and construction of the Westerham-Sunbridge section of the M25 Motorway, being built to relieve congestion and provide direct connection from west and south London to the channel ports. The motorway is designed to accommodate 90 million standard axles over its 40-year design life. Dual three-lane carriageways are constructed on gault clay and details are given of embankment and pavement designs, construction being in unreinforced concrete on crushed limestone sub-base. A description is given of the machines forming the paving train. Side-tipper lorries were used to transport the air-entrained concrete. Details are included of the eight bridges and underpasses, two steel sign gantries and three oil interceptors in the contract, the latter being to minimise the pollution rish to local waterways. (TRRL)

  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Publication Date: 1979-9-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00308879
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jun 9 1980 12:00AM