There is quite a lot traffic between Zambia and Botswana even though those two countries have common border only a little bit over 100 meters and that border is in the middle of Zambezi River. There has been talk about building a bridge there at Kazungula for years or maybe decades because there is no bridge. Seriously. No bridge. All the lorries (as in the pictures) and stuff are transported over the river by ferry boat. And they might have to wait pretty long to get to the other side.
Now some serious plans have been made to finally start the construction but that has waken up Zimbabwe. Zimbabwe doesn’t want to loose revenues and denies Zambia and Botswana having any common border. Interesting dilemma. So is there coming a bridge soon? Who knows… TIA.