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Exclusive | Bam Motts JV wins £75M Boston Barrier scheme

boston barrier graphic 2

A Bam Nuttall and Mott MacDonald joint venture (JV) has been announced as the preferred bidder for the £75M Boston Barrier flood defence scheme.

The team will carry out the detailed design and construction of the barrier and the associated works in the surrounding area.

The JV was one of six initial teams to apply for the contract. The race narrowed to four as two teams dropped out due to the complexity of the project before the tender package was sent out to bidders. A further team dropped out mid-tender as it emerged there were limited suppliers to join the bidders for the specialist gate needed.

Speaking at New Civil Engineer’s Flood Management Forum 2017, Environment Agency programme manager Jim Anderson said the three remaining teams offered high quality bids, but the BMM JV had won on a 60% quality, 40% cost evaluation.

Funding for the scheme is being provided wholly by government funding streams.

“Due to the sheer volume of properties that will be protected by the scheme, 100% of the funding is being provided by the government,” said Anderson.

This is in contrast to the similar coastal flood barrier scheme currently being built in Ipswich where 50% of the funding is being provided by the government with the remaining coming from partnerships.

Technical, project and cost management support is being provided by a Turner Townsend and CH2M joint venture. Dutch company Holandia will supply the gate at the centre of the barrier.

The project is now waiting on both a Transport Works Act Order (TWAO) and the full business case with a value of £103.2M to be given final approval. It is hoped that these will both be approved at the end of November.

The team is currently carrying out an advanced package of works for the barrier before starting on site pending the final go-ahead being given.

“The business case is a high quality document which has been engineered to make it as smooth as possible for it to go swiftly through the approvals process,” said Anderson. “We are super confident it will be given the go-ahead.”


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