A1L2B Drainage

Client: Carillion Morgan Sindall JV

Value: £1.5million
Location: A1, North Yorkshire
Contract Period: Commenced October 2014
Contract Type: NEC3 Subcontract Option B

In 2013 the upgrading of this 12 mile section of the A1 from Leeming to Barton was awarded to Carillion Morgan Sindall Joint Venture by the Highways Agency.

The A1 Leeming to Barton upgrade will replace the existing dual carriageway with a new three lane motorway. It will also include the provision of a new Local Access Road alongside the new motorway, improving safety for local traffic from the surrounding communities. Access to the strategic road network will be via a new grade separated junction at Catterick and an improved junction at Scotch Corner.

The 12 mile section of the A1 between Leeming and Barton carries between 59,000 to 69,000 vehicles per day. It has poor alignment with many side road junctions, farms and field accesses.

Howard Civil Engineering were initially awarded the drainage works to 4 of the outfalls of the scheme although further outfalls have been released since commencement on site.

Initial scope of works

  • Over 12,000m  surface and combined water drainage ranging from 300mm dia to 900mm dia
  • Over 11,000m of french and filter drain
  • Over 900m rising main 150mm dia to 300mm dia
  • Over 500no. manholes and catchpits up to 2100mm dia and 3.5m deep


We were pleased to received unsolicted praise from landowners through whose land we installed outfall connections.

David Lowry, Client Project Director for the JV, is quoted;

''I would personally like to thank your team for the commitment to the scheme, when working around these residential properties. The behaviours of the people involved is exceptional and a credit to your business.''


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