Treffry Viaduct, Luxulyan / Lanlivery - Cornwall (UA)

Combined viaduct and aqueduct. Granite built ten-arched bridge with a span approximately 200 metres, standing up to 27 metres above the valley floor. Water had been gushing from the leat within the structure, so water flow over the viaduct has been stopped. Leaks became evident at abutments and locations within the main spans of the structure. A solution to the leaking channel has now been agreed. The Cornwall Heritage Trust is working with Historic England to develop an investigation project to finalise the solution to the high level leakage problems of the leats within the viaduct.

Treffry Viaduct, Luxulyan / Lanlivery - Cornwall (UA)
© Cornwall Council

Site Details

  • Designated Site Name: Combined viaduct and aqueduct called Treffry Viaduct
  • Heritage Category: Scheduled Monument
  • List Entry Number: 1007279
  • Local Planning Authority: Cornwall (UA)
  • Site Type: Transport > Bridge


  • Building Name: Treffry Viaduct
  • Unitary Authority: Cornwall (UA)
  • Parish: Luxulyan / Lanlivery
  • Parliamentary Constituency: South East Cornwall
  • Region: South West

Assessment Information

  • Assessment Type: Building or structure
  • Condition: Poor
  • Occupancy / Use: Not applicable
  • Priority: B - Immediate risk of further rapid deterioration or loss of fabric; solution agreed but not yet implemented
  • Previous Priority: B
  • Ownership: Charity (heritage)
  • Designation: Scheduled Monument, WHS