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Assessing the Effect of Road Schemes on Historic Landscape Character

This guidance supplements the Highways Agency's Environmental Strategic Plan and the Highways Agency's Design Manual for Roads and Bridges Volume 11.

The assessment and management of historic landscape character is a relatively new approach in the sphere of development and spatial planning and is still an evolving discipline. It is a method that has great potential for contributing to the better design, construction and operation of the trunk road network. The DMRB advice on historic landscape impacts is necessarily couched in general terms, and it is considered that complementary and practical guidance will be helpful for road designers, environmental practitioners and contractors. The advice contained in this supplementary guidance document is intended to assist in the preparation of environmental assessments of the changes that will be made by road schemes to historic landscape character by identifying principles and emerging best practice. These include their definition, the role of historic landscape character, baseline data sources and collection, historic landscape analysis, assessing sensitivity and magnitude of change, outlining mitigation strategies and finally assessing the significance of effect.


  • Preface
  • Introduction
  • Topic interaction & existing guidance
  • Screening and scoping
  • Data collection
  • Developing historic landscape character descriptions
  • Historic landscape evaluation
  • Assessing magnitude of impact (change to HLC)
  • Mitigation design - managing change
  • Significance of effects and reporting
  • Glossary and further reading
  • Acknowledgements and contacts
  • Appendix 1

Additional Information

  • Series: Guidance
  • Publication Status: Completed


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