Why doesn’t the flyover work in cities like Kathmandu?

Japan International Cooperation Agency (JICA) will construct a flyover and tunnel on the Tinkune-Koteshwar-Jadibuti section with concessional loan assistance. As there is a lot of traffic congestion in this area, a flyover and tunnel are going to be built as alternatives, according to media reports. The initiative is set to proceed with concessional support from Japan, totaling around Rs 30.8 billion.