Headwall Removal & Outfall Works in Bristol

Specialist Headwall Removal and Outfall Modification Works in Bristol

Kaymac successfully completed a programme of specialist civil engineering works at The Boatyard in Brislington, Bristol, involving the removal, relocation and modification of two existing concrete headwall structures and associated drainage outfalls.

Working on behalf of Principal Contractor Afan Landscapes, Kaymac undertook a series of carefully sequenced operations to facilitate alterations to the existing drainage infrastructure.

The works required controlled concrete demolition, specialist lifting operations, temporary works, structural modifications and concrete reinstatement, with particular attention given to safe access, environmental protection and the integrity of the existing outfall infrastructure.

Our Solution

Kaymac was appointed to carry out specialist works to two existing drainage headwalls at The Boatyard in Bristol, helping to adapt the site’s drainage infrastructure to meet the requirements of the wider development.

Each structure presented different challenges, requiring careful planning, specialist lifting equipment and a coordinated approach to ensure the works were completed safely and with minimal disruption.

Relocating an Existing Headwall

Working in accordance with the approved FRAP, the first stage involved carefully removing and repositioning an existing concrete headwall to align with the drainage outfall.

Using a specially installed lifting system, our team safely lifted the structure from its original position before preparing new foundations and securing it in its revised location.

The surrounding area was then reinstated, with additional erosion protection and safety handrails installed to provide a secure and lasting solution.

Removing and Reinstating a Second Headwall

The second stage required the complete removal of another concrete headwall, followed by alterations to the existing drainage outfall.

Working within a restricted area, our team used specialist access equipment and controlled demolition techniques to safely dismantle and lift out the structure.

Protective measures were put in place throughout the works to contain debris and minimise environmental impact.

Once the headwall had been removed, the drainage outlet was modified and concrete repairs completed, leaving the area safe, secure and ready for the next stage of the development.

The Outcome

Completed in July 2026, the project successfully delivered the required changes to the site’s drainage infrastructure, allowing the wider development works to progress.

By combining specialist lifting capabilities, practical civil engineering expertise and careful site management, Kaymac provided an efficient solution to two challenging structural alterations.

The project highlights our ability to adapt existing infrastructure to meet changing site requirements, delivering safe, practical and long-lasting solutions for our clients.

Specialist Civil Engineering and Drainage Infrastructure Solutions

Kaymac provides specialist construction, maintenance, repair and refurbishment services for drainage infrastructure, culverts, outfalls, headwalls and other civil engineering structures throughout the UK.

Our experienced teams combine practical civil engineering expertise with in-house temporary works, specialist access and lifting capabilities to deliver solutions in challenging and restricted environments.

For further information about our civil engineering and drainage infrastructure capabilities, please contact the Kaymac team.