India Prime Minister Narendra Modi has inaugurated one of the most ambitious and strategic railway projects the nation has ever built.

Modi visited the Chenab bridge on Friday with tight security, waving an Indian tri-colour flag before boarding a test train that passed through picturesque mountains and tunnels to reach an inauguration ceremony for another high-elevation bridge named Anji.

Indian Prime Minister Narendra Modi arrived in Kashmir on Friday, his first visit to the contested Himalayan region since a conflict with arch-rival Pakistan last month, and opened a strategic railway line.