Border Crossings leaving UY

If you're travelling far by vehicle, you are bound to have to negotiate Border Crossings now and again! We have a list of crossings here, which you can add to and also to read the experiences of fellow travellers; what documentation they needed, what things cost and how long it took.
But you are also a traveller! Please do tell us your own personal experience of Border Crossing and help the community. Find the border crossing you are interested in on the map below and add your own experience.