The Blue Nile Bridge in Khartoum - 2 piastre

This airmail stamp commemorates Sudan's industrial modernization, economic integration, and development of heavy infrastructure by depicting the historic Blue Nile road and railway bridge connecting Khartoum with Khartoum North. Opened in the early 20th century, this massive steel truss bridge stands as a profound symbol of engineering progress, urban connectivity, and institutional growth, allowing trains and automotive transport to bridge the country's vast river barriers.