Mway Comms engaged David Lodge Lighting Ltd (DLLL) to carry out structural assessments of existing lighting columns along the M49 link road, ahead of their planned upgrade to energy-efficient LED luminaires. The objective was to determine the suitability of reusing the existing column stock with the proposed CU Phosco P862 luminaire. Assessments were required to ensure that the new luminaires—while more efficient and lighter—met safety and structural integrity standards for long-term performance under updated wind and lighting loadings.
WORK CARRIED OUT
DLLL undertook desktop structural assessments of lighting columns installed along the 5-mile stretch of the M49 motorway between the M4 (J22) and M5 (J18A). Calculations were based on the characteristics of the proposed P862 LED luminaires, including their weight, wind area, and mounting configurations. These were reviewed in relation to the surveyed column type, dimensions, installation arrangement, and exposure to site-specific wind conditions. DLLL’s evaluations provided critical assurances that the existing column infrastructure could be safely reused, helping National Highways reduce waste and column replacement costs.
CHALLENGES
The M49 is a strategically important but logistically complex route, accessible only via other motorways. This posed challenges for both site surveys and installation scheduling. Although DLLL’s assessments were desk-based, they required precise coordination with Mway Comms to ensure accurate data on existing column specifications. In addition, the proximity to the Severn Estuary and the elevated nature of some column positions introduced elevated wind loading factors, requiring careful consideration in the calculations. Timing was critical, as access to road space was restricted due to other nearby major infrastructure projects using the M49 for diversions.
RESULTS
David Lodge Lighting’s assessments confirmed that the existing lighting columns were structurally suitable for reuse with the upgraded P862 LED lanterns and CMS components. This validation allowed the project to proceed without the need for widespread column replacements, significantly reducing both cost and disruption.
The wider upgrade—delivered in partnership with CU Phosco and Mway Comms—saw the installation of 255 P862 LED luminaires, enhancing visibility and energy efficiency across the route. The new lighting scheme contributes to National Highways’ CO₂ reduction goals, improves safety for road users, and reduces maintenance demands. DLLL’s contribution ensured structural compliance and safety remained at the forefront of the project’s success.
Mark Godden, Principal Engineer at National Highways, commented:
“David Lodge Lighting Ltd (DLLL) in close collaboration with Mway Comms allowed the critical structural assessments of our existing lighting columns along the M49 link road, giving the project expert confidence that the new LED luminaires could be safely installed, helping us achieve an efficient delivery and contributing to our Net zero plan”.
End Client: National Highways Area 1/2
Contractor: Mway Comms
Lighting manufacturer: CU Phosco
