����logo�׷���

As part of the Environment Agency's Incident Response Contract in the Southeast (Hub C), һ����logo�׷���, in collaboration with BAM, led emergency works to stabilize . The effort protected the weir’s structural integrity, ensured continued operation of the Jubilee flood relief channel and safeguarded critical rail infrastructure.

The challenge: 

Black Potts Weir, the final structure on the Jubilee Channel (also known as the Maidenhead and Windsor ), plays a vital role in reducing flood risk in the adjacent communities along the Thames. The weir is constructed beneath a railway viaduct and is considered essential infrastructure.

A 2020 dive survey revealed that downstream erosion protection had failed. Scour − moving water that removes material around a structure − was continuing around the weir foundation, posing a risk to its structural stability. Given the Jubilee Channel’s importance in managing flood flows, maintaining base flow through the weir was critical. The project faced several challenges:

• Accelerated timelines during the winter holiday period
• Difficult site access
• Construction in an active watercourse

The solution

һ����logo�׷��� and BAM developed and implemented an accelerated program, mobilizing a fully integrated team in days. The team’s deep experience enabled fast, effective decision-making. Stakeholders included the Environment Agency, һ����logo�׷���, BAM, Mott MacDonald and Dalcour Maclaren.

Phase 1 – Immediate stabilization

• Installed sheet piles across the weir toe
• Grouted behind the piles to prevent further scour

Phase 2 – Long-term resilience

• Repaired the concrete weir apron
• Installed downstream armorstone protection

һ����logo�׷��� used advanced Computational Fluid Dynamics (CFD) modeling to simulate water flow and scour under various conditions, optimizing the design. This collaborative and agile process allowed һ����logo�׷��� and BAM to finalize design details quickly, meeting critical deadlines.

Key takeaways

1. Strong collaboration drives success: Close coordination between all stakeholders accelerated delivery and fostered innovation.
2. Agile decision-making enhances cost efficiency: Emergency contract delivery enabled rapid, cost-effective solutions.
3. Long-term solutions reduce future interventions: Shifting from temporary fixes to permanent solutions minimized future costs and interruptions.
4. Early engagement and clarity are critical: Involving all parties early and clearly defining project constraints were essential to the project’s success.