Proposals have been submitted to construct a rail link from Francistown to Kazangula in Botswana in order to allow Botswana Rail to capture the North South Transit traffic. Zambia continues to watch with keen interest the extension of the Botswana Railway (BR) system from Francistown towards Kazungula, the border crossing point between the two countries where joint plans to construct a modern road and rail bridge are already at an advanced stage. The Zambian Transport Ministry officials sees it as the cue for Zambia to also build a line on its side of the border to connect Livingstone to Kazungula - a 67km stretch - and link up with the Botswana rail system. The rail link will create a super-link to the South African port of Durban. Equally, it would open up a rail link to the Namibian port of Walvis Bay, which would help further develop what is known as the Walvis Bay Corridor. Zambia would continue to seek potential partners for construction of such infrastructure as railways, roads and airports. Zambia is having to re-look her railway connectivity because it is the mode most suited and perhaps the most cost-effective means of transporting copper, which is both bulky and heavy. The main line from Livingstone in the south to the DRC border in the north has however decayed primarily due to lack of investment, thus putting more strain on the roads leading to congestion and over use. The road is handling most of the imports and exports to and from not only Zambian mines but those of the DRC as well.