Sesheke to Ngonye
The route north from Sesheke to Senanga is fairly straightforward, following the western bank of the river for the first 190km to Sitoti along an intermittently good all-weather gravel road. This should be navigable with a high-clearance 2WD all year, although sections do get washed away sometimes and there's very little traffic on the road – so I'd feel happier travelling this way with at least a 4WD, if not two. On the way you'll pass several fishing camps on islands in the river which make convenient bases for those wishing to spend some time in the area. These are clearly signposted from the road.
Before the construction of the new high-level bridge, there was a ferry at Sesheke (GPS:FERRY1) which usually cost US$25/Kw125,000 for foreign-registered vehicles, or US$5/Kw25,000 for Zambian vehicles, although (like the Sitoti pontoon) this rule did seem to be applied flexibly. It operated 06.00–18.00 with no fixed schedule, carrying three vehicles at a time and just going across when needed. With the new bridge, it is likely to be swiftly redundant!