Protecting properties, infrastructure and development zones.
Our impact
90,000t
Rock placed at Stallingborough
4.5km
Stretch of coast protected
£29m
Flood defence upgrade
1.1bn
Expected economic benefits over 25 years
The 60-year old sea defences at Stallingborough required upgrading.
Humber upgrade
Stallingborough’s coastal flood walls on the south side of the River Humber were originally built following devastating floods in 1953. They are now at increasing risk of damage from rising sea levels and more frequent storms.
A Jackson team, working for the Environment Agency, oversaw a £29m upgrade along this 4.5km stretch of coastline near Grimsby.
The improvements are expected to generate economic benefits valued at £1.1 billion over the next 25 years – protecting 2,300 properties, nationally important infrastructure, vital industry, and areas outlined by North East Lincolnshire Council for future development.
Each boulder was positioned carefully to ensure the integrity of the design.
Rock placement
Almost 90,000 tonnes of rock armour were placed here, as part of the third phase of the Stallingborough Sea Defence Improvement Scheme.
The rock originated from Oban on the west coast of Scotland and was shipped in by barge, saving on carbon emissions and lorry movements.
The boulders were placed from the sea wall using a long-reach excavator with the operatives making innovative use of machine control software to ensure the profile of the slope and the density of the rock met design specification.
This work could only take place from April to October, so as not to disturb overwintering birds who flock to the Humber’s mudflats to feed and nest.
Work during the colder months consisted of repairs to four concrete culverts that carry water through the flood embankment from the landward side watercourses and surface water drainage systems and out into the Humber.
