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Gosport

Linkspan and pontoon

installation at Gosport Ferry’s Terminal

A 58 tonne linkspan had to be carefully barge-craned into place at Gosport Ferry, the busiest short-route ferry service in England, during an 85 minute lifing operaton.

The marine civil engineering project, run by Trant Constructon, to install the 41 m-long metal-and-glass structure on the Gosport side of Portsmouth Harbour, following months of metculous planning, took place over a weekend to reduce travelling disrupton to a minimum for some of the services to the 3.6 million annual passengers.

At 5.30 am this morning the facility was re-opened to the public again following what is thought to be the largest replacement works on site since 1921.

Southampton-based civil engineering and constructon specialist, Trant, was appointed by Gosport Borough Council as the main contractor for the works, which culminated with the linkspan, being eased into positon following 10 months of groundwork preparaton and a clear weather window. A few hours before, the new 60 m pontoon had also been placed. Six piles had been driven 18 m into the shore, with a further three 610 mm diameter piles driven 28 m into the seabed, with facility secured onto the fxed supportng structure with pinpoint accuracy.

Fabricated by Ravestein, a shipyard and constructon company in Deest, Holland, the covered linkspan and pontoon were transported across the English Channel by crane barge. The facility, allowing ferries to berth alongside, was constructed with a gentle linkspan incline to make it easier for wheelchair users, cyclists and people pushing buggies. Mark Blackler, Trant Construction’s project manager, said: “This design-and-build contract has demonstrated yet

again the diversity of contracts that the company is capable of delivering. Works on site have been carried out in difcult conditons with many tasks having to be planned around peak passenger fow periods.”

Andy Rickard, Trant Construction’s contracts manager, said: “This has been a chal lenging contract to execute, with numerous UK and Dutch sub-contractors being employed to fabricate these new structures in the Netherlands, culminating

Page 14 Contractors World - UK & Ireland Vol 1 No 5

© Time lapse photography courtesy of www.skylens.co.uk and Gosport Borough Council

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