Menai Suspension Bridge Refurbishment
Menai Strait, North West Wales, UK · 2022–2027 (estimated completion) · £10.3 million (estimated in 2017 for original construction, not refurbishment); refurbishment cost not explicitly stated but significant.
The judgement call
Account action unavailableThe bridge, designed for horse and cart, faces significant challenges in accommodating modern traffic loads after 200 years. - The discovery of further structural problems during inspections led to delays and extended repair timelines. - The use of modular access systems and careful traffic management aims to minimize disruption during complex works. - The project highlights the continuous and evolving challenges of maintaining historic, long-span bridges and the need for significant investment to extend their operational life.
Key engineering challenges
Repairs to critical structural elements such as corbels (concrete beams supporting footways). - Addressing the condition of steel hangers, leading to temporary closures and weight restrictions. - Combating corrosion in a harsh marine environment. - Maintaining traffic flow on a vital transport link during extensive maintenance.
Project facts
- Client / owner
- Welsh Government (via Transport for Wales)
- Lead contractor
- Spencer Bridge Engineering (for critical works)
- Lead designers
- Thomas Telford (original designer)
- Project type
- refurbishment | upgrade
- Scale
- Grade I listed suspension bridge; 579 feet (176m) main span; 120-year lifespan (original design)
- Disciplines
- Civil; Structural; Heritage Engineering; Materials
- Standards & frameworks
- Grade I listed; relevant British Standards
Sources: Welsh Government: https://www.gov.wales/a5-menai-suspension-bridge - New Civil Engineer (2025): https://www.newcivilengineer.com/latest/next-phase-of-menai-suspension-bridge-maintenance-using-modular-access-system-to-begin-16-07-2025/ - Spencer Group: https://thespencergroup.co.uk/spencer-bridge-engineering-delivering-critical-works-to-safeguard-historic-menai-suspension-bridge/ - Wikipedia: https://en.wikipedia.org/wiki/Menai_Suspension_Bridge - BBC News (2026): https://www.bbc.com/news/articles/cj4lqjr4dvko - ASCE: https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks/menai-suspension-bridge