Concrete & Polymer Reinforced Crib Walls - Design, Supply & Install We are inviting expressions of interest from experienced suppliers to undertake the design, manufacture, supply and installation of concrete and/or polymer reinforced crib wall retaining structures as part of the Lower Thames Crossing Roads North programme. The package comprises approximately 3.5km of crib wall retaining structures across multiple locations. Suppliers will support the development of practical, buildable and cost-effective solutions that integrate with the wider scheme design. Package Scope The package includes: Design and design checking of crib wall systems. Support to Approval in Principle (AiP) and design development. Internal stability assessments and coordination with project stakeholders. Manufacture and supply of crib wall components. BIM and/or 3D modelling where applicable. Temporary works design and management. Delivery and installation of crib wall systems. Coordination of drainage, foundation and geotechnical interfaces. Quality assurance, inspection, testing and handover documentation. What We're Looking For Suppliers should demonstrate experience in: Designing, manufacturing, supplying and/or installing crib wall retaining structures. Delivering highways, infrastructure, earthworks or civil engineering projects. Safe and efficient construction planning and delivery. Design management, quality assurance and stakeholder collaboration. Supporting projects with demanding programme requirements. SMEs are encouraged to express interest, either independently or as part of a wider supply chain. Experience & Standards We are seeking organisations with: Relevant crib wall or retaining structure experience. Appropriate engineering and design capability. Experience supporting design development and approvals processes. Strong health, safety, environmental and quality management systems. The ability to support Lower Thames Crossing objectives relating to sustainability, carbon reduction and social value. Next Steps For further information, including pre-qualification requirements and tender timescales, please respond to this notice by 27.08.2026. The Lower Thames Crossing (LTC) is a new road to better connect Essex and Kent through a tunnel beneath the River Thames. Our purpose is to drive a change in how we deliver - connecting people to jobs and businesses to opportunities, leaving a skills legacy for the local community and construction industry, all whilst restoring nature and drawing a new blueprint for low-carbon construction. Our ambition is to deliver the UK's greenest road, and to do the right thing for local communities and the environment. We can only achieve this with the support of our supply chain, and it is therefore critical that for any supplier to be successful in winning work on LTC, they must demonstrate commitments to supporting delivery of our ambitions: • Delivering the works through a 'zero emissions' solution, and not using diesel on site in any plant or machinery. • Supporting us to leave a skills legacy for the local community, by not only recruiting locally, but upskilling your workforce to enable meaningful progression into higher paid higher skilled work. • Helping to facilitate successful opportunities by providing early careers roles, as well as inspiring young people into construction through delivery of STEM engagement.