CASE STUDY 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 Project: M25 Gade Valley Viaduct - Hertfordshire Client: Connect Plus / Highways England / Geoffrey Osborne Ltd. Overview: Gade Valley Viaduct near Kings Langley, is a 450 metres long multi-span composite viaduct carrying the M25 motorway between junctions 20 and 21. The viaduct comprises 11 spans that is composed of twin decks, where each deck is formed from 4 open topped steel box girders within an in-situ cast concrete slab. Supplied: Ekspan carried out a detailed inspection of 166 pot bearings over a 7-day period. All evaluations were recorded and photographed f

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