Robinstown Culvert, Westmeath

A major challenge was securing approvals from four key public bodies: Inland Fisheries Ireland, Waterways Ireland, OPW, and Westmeath County Council. Each had specific regulatory and operational requirements, necessitating extensive coordination. Inland Fisheries Ireland mandated ecological protections due to the stream’s role as a fish breeding channel, while Waterways Ireland required licensing and approval for the canal damming process. OPW’s Section 50 approval set strict hydraulic performance criteria, and Westmeath County Council required careful planning to limit public walkway closures.

Timing constraints further complicated the project. Inland Fisheries restricted in-stream works to the fish off-breeding season (May to September), while Waterways Ireland sought to maintain summer water supply to the Royal Canal. We devised a phased construction plan aligning these requirements, ensuring compliance while minimising disruptions.

Ground conditions also posed risks, with varied soil profiles affecting crane stability and excavation feasibility. We conducted additional site investigations and recommended a granular base to support crane operations. The initial sheet piling design was abandoned due to safety concerns, leading to an alternative open excavation approach, enhancing constructability and worker safety.

Through meticulous planning, stakeholder collaboration, and innovative design, we successfully delivered a complex infrastructure upgrade that balances flood mitigation, environmental protection, and development potential. The project exemplifies excellence in engineering, ensuring long-term resilience and sustainable urban growth in Mullingar.