Search Results: 'Highways Agency'
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Box jacking under the M1
01 September, 2003
Jacked box tunnelling was used for the first time under a live motorway in the UK at Junction 15A on the M1 Motorway, when a vehicular underbridge, 14m wide, 8.5m high by 45m long was installed with 1.6m of cover to the motorway. On the 19 June British Tunnelling Society members were privy to a detailed explanation of the project
Safety upgrade for Mersey Kingsway
01 July, 2003
The Mersey Kingsway road tunnels, located in Liverpool, UK, were constructed in the late 1960s. Recently, three new cross passages have been constructed for emergency evacuation and to provide safer access for emergency services. Mark Leggett, associate, and Kevin Roberts, principal engineer, for Mott MacDonald Ltd, describe the procurement, design and construction approach adopted for these safety improvements
Managing tunnel sustainability
01 May, 2003
According to N G Swannell, associate director for Halcrow Group Ltd, the key to effective tunnel management is through proper planning and detailed risk assessment. In this article, Swannell sets out a general framework, drawn from international asset management practice, that can be applied to tunnel structures