This article gives a brief account of the progress that has been made in the construction of the Keswick by-pass on the A66, which is due to be opened in the spring of 1975. Reference is made to the major bridge over the Greta Valley which has a prestressed concrete cellular box section deck and is 220M long. It has 4 spans, the longest being 73M and is about 30M above river level. Some detail is given of the foundations of the Greta Bridge and of the use of TV probes in trial bore-holes to obtain information on the bedding planes in the rock. This showed the need to transfer the load to the bed-rock by underbearing in order to isolate the upper wedge-shaped layers which could not support any additional load. Reference is also made to the problem of transporting material without adding the heavy commercial traffic through Keswick and of the use of line of the old Workington-Penrith Railway as a haulage road. The article concludes by briefly discussing the problems caused by poor alluvial clay and silt soils between Bassenthwaite and Derwentwater and the flexible road construction that was used for this $3.25M long-term fixed-priced road contract. /TRRL/

  • Availability:
  • Corporate Authors:

    IPC Building and Contract Journals Limited

    32 Southwark Bridge Road
    London SE1 9EX,   England 
  • Authors:
    • Atkinson, I
  • Publication Date: 1974-12-5

Media Info

  • Features: Photos;
  • Pagination: p. 42-43
  • Serial:
    • Volume: 262
    • Issue Number: 4970
    • Publisher: Reed Business Information, Limited
    • ISSN: 0010-7859

Subject/Index Terms

Filing Info

  • Accession Number: 00096772
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jul 15 1975 12:00AM