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Boston Barrier update - October 2018

Here is the latest information on the Boston Barrier scheme by the Environment Agency.

Key messages

Piling works

Piling is an essential element of the Boston Barrier Scheme and over 2,000 tonnes of steel sheeting are currently being put in place to strengthen the riverbanks in preparation for the barrier.

Residents in the area may experience some higher levels of noise whilst piles are installed on the right bank of The Haven and to create the cofferdam which will provide a watertight workspace for the Barrier.

This has included some work outside of usual working hours which has been undertaken in order to facilitate the movement of construction vessels on the appropriate tides, to ensure the integrity of the embankment is maintained, and to mitigate time lost from severe weather conditions.

The first main phase of piling work should finish towards the end of the year and some secondary works will be undertaken in January at a lesser scale.

Contractors at BAM Nuttall & Mott MacDonald Joint Venture (BMM JV) are monitoring noise and vibration levels at the site closely. BMM JV are using best practice mitigation to help reduce the levels of noise and have installed a noise shroud for the properties directly adjacent to the works along Wyberton Low Road.

Webcam image from Boston Barrier Displays a larger version of this image in a new browser window

Fishing fleet relocation

The fishing fleet have now moved in to their temporary new home at the Port of Boston which will put them downstream of the Barrier works. This will mean that their day-to-day operations will not be affected during the construction process.

The move has involved the demolition of an old grain tower to make way for the construction of a temporary quay and moorings and the installation of new access and egress ladders, mooring poles, fendering and temporary surfacing and service installations.

All other river traffic can now use a bypass channel created between the north cofferdam wall and the quay wall in the Port. It is over 18m wide and sufficient for all small boats to pass through.

The channel operates a one vessel at a time system and vessels with the current behind them have priority.

A guard boat on duty in the river to assist river users who need help and to direct traffic when it gets busy.
 

fishing fleet move Displays a larger version of this image in a new browser window

Scheme components

Site map barrier Displays a larger version of this image in a new browser window

• Construct Barrier structure and control building

• Works to Wet Dock Lock

• Sheet piled flood walls on the right bank

• Sheet piled and concrete flood wall on the left bank

• Demolition and construction of new grain conveyors

• Capital dredging

• Diversion of 3 no. 11kv electricity cable

• Scour protection

• Security fencing on the right bank surrounding the barrier structure

• Landscaping and lighting

 

The year ahead

• Continue construction of right bank embankments

• Cofferdam pump out and excavation

• Construct barrier control room (foundations already in place)

• Fabrication of barrier gate offsite

• Manufacture hydraulic rams

• Construction of the barrier

• Secondary dredging