Crossrail Assessment of Impacts on Heritage and Landscape Technical
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Crossrail Assessment of Impacts on Heritage and Landscape Technical Report Volume 2 of 6 February 2005 1E0316-G0E00-00001 This report has been prepared by Alan Baxter and Associates and Chris Blandford Associates for Cross London Rail Links Limited. Cross London Rail Links Limited 1, Butler Place LONDON SW1H 0PT Tel: 020 7941 7600 Fax: 020 7941 7703 www.crossrail.co.uk ASSESSMENT OF IMPACTS ON HERITAGE AND LANDSCAPE TECHNICAL REPORT This report has been prepared jointly by Chris Blandford Associates and Alan Baxter and Associates for Cross London Rail Links Limited. __________________________ __________________________ Date ______________________ Date ______________________ For Chris Blandford Associates For Alan Baxter and Associates Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 Volume 2: Contents Western Section Introduction Route window W25 Maidenhead Station Route window W24 Maidenhead Railway Bridge Route window W23B Jubilee Rover to Taplow Station Route window W23A Taplow Station Route window W22 Lent Rise Route window W21 Burnham Station Route window W20 Dover Road & Leigh Road Bridges Route window W19 Stoke Poges Lane Bridge Route window W18B Wexham Road Bridge Route window W18A Slough Station Route window W17 Middlegreen Road,St Mary’s Road & Trenches Bridge Route window W16 Langley Station Route window W15 Dog Kennel Bridge Route window W14 Iver Station Route window W13 West Drayton Station Route window W12 Horton Road and Old Stockley Road Bridges Route window W11 Stockley Flylover Route window W10 Hayes and Harlington Station Route window W8/W9 Southall Station and Southall West Sidings Route window W7 Hanwell Station Route window W6 West Ealing Station Route window W5 Ealing Broadway Station Route window W4 Acton Main Line Station and Yard Route window W3 Old Oak Common Depot Route window W2 Canal Way Route window W1 Portobello Junction Route window H1-H5 Heathrow Express Tunnel Contents 1 Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 2 Contents Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 Volume 2 Western Route Section Introduction Volume 2 3 Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 Contents 1. Introduction 7 1.1 Background 7 1.2 The Heritage and Landscape Report 8 1.3 Structure of the Report 9 2. Introduction To Volume 2 10 3. Description of the Scheme 11 3.1 Permanent Works 11 3.2 Construction 11 4. PPG 15 Principles 13 4.1 Listed building consent: Demolition and alterations 13 4.2 Control over demolition: Conservation Area Consent 14 4.3 Setting of Listed Buildings 14 5. Generic Works 15 5.1 Bridge Works 15 5.2 OHLE works 24 5.3 Utilites Works 43 Introduction 5 Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 6 Introduction Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 1. Introduction 1.1 Background Crossrail is a major new cross-London rail link project that has been developed to serve London and the southeast of England. Crossrail will support and maintain the status of London as a world city by providing a world class transport system. The project includes the construction of a twin-bore tunnel on an east-west alignment under central London and the upgrading of existing National Rail lines to the east and west of central London. The Crossrail route is shown in Figure 1.1. Transport for London Overview of Crossrail Route The project will enable the introduction of a range of new and improved rail journeys into and through London. It includes the construction of seven central area stations, providing interchange with London Underground, National Rail and London bus services, and the upgrading or renewal of existing stations outside central London. Crossrail will provide fast, efficient and convenient rail access to the West End and the City by linking existing routes from Shenfield and Abbey Wood, in the east with Maidenhead and Heathrow in the west. Crossrail will be a significant addition to the transport infrastructure of London and the southeast of England. It will deliver improved services for rail users through the relief of crowding, faster journeys and the provision of a range of new direct journey opportunities. The project will also have wider social and economic benefits for London and the southeast of England Introduction 7 Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 1.2 The Heritage and Landscape Report In 2002 Cross London Rail Link Ltd (CLRL) appointed consultants to carry out a number of studies into the environmental impacts of the Crossrail scheme as inputs into the Environmental Impact Assessment and Statement. Alan Baxter and Associates (ABA) were appointed to examine the impacts of the scheme upon listed buildings. Chris Blandford Associates (CBA) were appointed to examine the impacts upon landscape/townscape and visual amenity. These two major pieces of work have an area of overlap in so far as they both consider the impacts of the scheme on listed buildings and on conservation areas and they both address the requirements of Planning Policy Guidance Note 15 (PPG 15) – Planning and the Historic Environment with regard to listed buildings and conservation areas. Consequently, there has joint working between the two consultancies. In addition, inputs have been obtained from both the engineering design consultants (Mott McDonald (MM) and Scott Wilson Railways) (SWR) and the architects (John McAslan & Partners and Hawkins Brown) to provide additional information in relation to the design development of proposals affecting listed buildings or buildings within conservation areas. This report has been compiled from the series of studies carried out by these consultants and provides a synthesis of their work into a joint report on heritage and landscape. The responsibilities of the consultants in compiling this report are set out below: Direct impacts on listed buildings and Alan Baxter & Associates structures and above ground Scheduled Ancient Monuments Impacts on the setting of listed Chris Blandford Associates supported by Alan Baxter buildings & Associates in relation to historic buildings. Impacts on Conservation Areas Chirs Blandford Associates supported by an assessment by Alan Baxter & Associates of the contribution to the Conservation Areas of buildings to be demolished. Design development of proposals Cross London Rail Links supported by Mott affecting listed buildings and buildings MacDonald, Scott Wilson Railways, John McAslan & in Conservation Areas Partners and Hawkins Brown Impacts on townscape and landscape Chris Blandford Associates character Impacts on visual amenity Chris Blandford Associates 8 Introduction Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 1.3 Structure of the Report Volume 1 provides an overview of the scheme, sets out the methodologies employed by the consultants and summarises the principal impacts identified. Volumes 2 (West), 3 (Central West), 4 (Central East) and 5 (East) examine the detailed impacts for each route window. Each volume sets out the PPG 15 principles to be considered in the assessment and describes the relevant planning policy framework included in the Planning authorities is adopted and other statutory plans. For each route window there is: - a description of the temporary and permanent works; - a baseline description of the listed buildings, conservation areas, townscape/landscape character and quality, relevant landscape designations and the location and sensitivity of potential visual receptors; - an assessment of the impact of the works on heritage and landscape resources and visual amenity including the proposed mitigation works to ensure that adverse impacts are minimised as far, as is reasonably practicable; - a summary table of the impacts; - details of any assumptions made about the scheme; - references. Where there are predicted to be impacts on listed buildings, or where buildings within conservation areas are to be demolished, the report also sets out a description of the design development, explaining the reasons for the selection of the proposed scheme. Volume 6 contains plans including Townscape Character Baseline mapping and Zones of Visual Influence (ZVI) plans for each route window The potential for impacts on listed buildings as a result of settlement is dealt with separately in the report entitled“. Assessment of Settlement Impacts on the Built Heritage – Technical Report”. This report assesses the potential impacts of settlement caused by the construction of Crossrail on listed buildings and describes how any potentially significant impacts will be mitigated, so that no significant settlement impacts will be expected when the scheme is constructed. Introduction 9 Crossrail Line 1 Assessment of Heritage and Landscape Impacts – Volume 2 2. Introduction To Volume 2 Volume 2 of the report covers route windows W25 to W1 from Maidenhead to the tunnel portal west of Paddington Station with a spur to Heathrow. Each route window is dealt with in a separate section in the remainder of this document. This introductory section sets out an overview of the scheme in the western section and section-wide issues. Section 3 provides a summary of the scheme in the western section. Section 4 provides relevant extracts from planning policy guidance, in particular Planning Policy Guidance Note 15 (PPG 15) – Planning and the Historic Environment which sets out Government policy with regard to listed buildings, heritage