Head Office, UK & Export Sales Compass Works, 410 Brightside Lane, Sheffield S9 2SP Tel: +44 (0) 114 2611126 • Fax: +44 (0) 114 2611165 • Email: enquiry@ekspan.co.uk Website: www.ekspan.com CASE STUDY Background Information Boston Manor Viaduct, located just off Boston Manor Road, is a 1km long, steel, 17 span elevated section of the M4 motorway in west London. The Viaduct carries the M4 motorway into London and is the main route from central London to Heathrow airport. An inspection carried out by a third party revealed the existing roller bearings required immediate remedial works. During the emergency works Ekspan designed and installed temporary packers capable of both supporting and allowing the structure to articulate should the bearings fail. Geoffrey Osborne Ltd employed E

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