Lagan Weir Bridge


The new Lagan Weir Pedestrian and Cycle Bridge connects Donegal Quay with Queens Quay, replacing the old footbridge as part of a £5m investment in the city.
Working with Graham Construction we were tasked with providing a lighting solution for the bridge. Given its wider context in the waterfront redevelopment it was important to create something that was both modern and aesthetically pleasing. The LED lighting on the bridge (with its colour control software) reflects beautifully off the surface of the Lagan and is designed to set the scene for the cityscapes that people simply love. The stunning photographs that appear online and in brochures show that locals and tourists have responded well to the project and see the Lagan Weir Bridge as an elegant piece of engineering that puts a fresh coat of paint on Belfast’s night sky.

Stothers provided a state of the art LED lighting system to the Lagan Weir crossing which can be programmed to a range of colours as occasion demands. A fall arrest system was installed to detect any falling objects from the bridge with a two-stage alarm detection process. The existing lookout building was enhanced to provide additional fire alarm equipment and mains distribution and renewables were also introduced with PV arrays mounted on the weirs.

Installing the lighting solution wasn’t as easy as it may seem at first. The bridge is a unique shape meaning accuracy of first fix dictated working to very definite measurements. Naturally, working over water also presented a health and safety challenge which had to be carefully controlled and managed by our professional team.

Key Facts:

  • An estimated 16,000 people crossed the old bridge every week. With the new bridge likely to get the same or indeed even more traffic the pressure was on to provide something spectacular!
  • Our fall arrest system was been carefully calibrated to an extremely high level of accuracy ensuring the safety of the thousands of pedestrians every single day.

Client: Department for Social Development

Main Contractor: Graham ConstructionConsultant


Consultant: Aecom

Services: Electrical

Duration: 16 weeks

Value: £2M

Location: Belfast City Centre