BANKING ON THE NEWARK MARSHES

Contractors submitting the original bids for the construction of the 10km, single carriageway Newark bypass were asked to reconsider their bids because of the high cost. The small market town, with a designated conservation area in its centre has an adequate bypass from north to south but is very congested in the east-west direction. Most of the new east-west relief road passes through the river Trent floodplain where several layers of soft alluvial clay exist below a stiffer material just beneath the surface and most of the route is an embankment. Some of the larger embankments are subject to settlement periods of up to 15 months. Removal of all unsuitable material in the foundation was not practicable, and so a design enabling the partial removal of poor ground has been adopted combined with partial replacement using a system of twin parallel 'shear keys' of granular fill material. All the alluvial material is removed on the approach embankments to bridges and other structures. The contract contains a large structural element, with bridges over railways constructed with precast, prestressed concrete beam decks. River bridges will have steel deck beams.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00107859
• Corporate Authors:

  Reed Business Information, Limited

  Quadrant House, The Quadrant
  Brighton Road
  Sutton, Surrey  United Kingdom  SM2 5AS
• Authors:
  • Webb, C
• Publication Date: 1989-8-10

Language

• English

Media Info

• Pagination: p. 20
• Serial:
  • CONTRACT JOURNAL
  • Volume: 350
  • Issue Number: 3730
  • Publisher: Reed Business Information, Limited
  • ISSN: 0010-7859

Subject/Index Terms

• TRT Terms: Alluvium; Beltways; Bridges; Bypasses; Clay; Construction; Earthwork; Embankments; Fills; Foundations; Precast concrete
• Uncontrolled Terms: Fill (Embankment)
• Geographic Terms: United Kingdom
• ITRD Terms: 4030: Alluvium; 3455: Bridge; 2709: Bypass (loop road); 4177: Clay; 3655: Construction; 3653: Earthworks; 2801: Embankment; 3377: Foundation; 4792: Precast concrete; 8119: United Kingdom
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00604867
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Feb 28 1991 12:00AM