Stone arch bridges

Connecting communities using local construction materials

Buildings: Construction method
Material
Food: Distribution
Freight

Stone arch bridges

Uganda
Buildings: Construction method
Material
Food: Distribution
Freight

Background

Enabel, the Belgian development organization, wanted to improve agriculture in Uganda and Tanzania. They found that by building bridges, access to urban markets could be improved and earning potential could be increased for rural communities, while making food supply networks more resilient for urban dwellers.

Approach

The bridges are built from locally available stone instead of concrete and steel, and use ancient construction methods and standardised designs. This allows for more local jobs to be created whilst reducing both costs and emissions by 75%.

Social Impact

By making it easy and safe to cross rivers, rural communities are better connected to urban markets for their products. Bridges also facilitate other connections such as travel for work and healthcare, improving quality of life in outlying areas. The construction of the bridges creates local jobs and develops stone masonry skills that can be used in other construction projects.

Environmental Impact

By using locally available stone, the emissions associated with transportation of heavy materials is significantly reduced. The construction of the bridges requires less cement than would normally have been the case, further reducing the emissions associated with construction.

Success Factors

An online manual has been developed, allowing other communities to adopt this approach.

Evidence

The project has built over 100 bridges and trained about 50 masons in the construction technique.

Evolution

Challenges

Last edited on:
May 2, 2023
Shared on:
May 2, 2023
Last Updated:
April 14, 2025

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