Nigeria needs 200,000km of durable new roads but it’s expensive: we tested plastic to make them stronger and cheaper

Nigeria doesn’t have enough roads, and it’s making life harder for people, especially in rural areas. The Nigerian government’s latest estimate is that the country needs another 200,000 kilometres of roads and this will cost a whopping N18 trillion (US$12.2 billion).

These new roads will help people get to schools, hospitals and markets, and boost the economy. But the high price of equipment, maintenance, labour and materials needed, like aggregates,…

© La Conversation - lundi 20 octobre 2025