Bangladesh is a country of rivers. The Karnaphuli River services the city of Chattogram (formerly called Chittagong), the largest sea port of Bangladesh. With the rapid development of southeast Bangladesh, especially in the regions south of Chattogram, the two existing bridges over the Karnaphuli River are inadequate to accommodate the increase in traffic. With a population of over six million, the heavily congested city of Chattogram is closely surrounded on the east by the Chittagong Hill Tracts and the west by the Bay of Bengal, making an additional bridge type crossing of the Karnaphuli River unviable.