Saw your comment and opted to share some facts in a post, which you'll find here:
https://peakd.com/hive-183952/@tanjakolader/introduction-to-surinames-rivers-necessity-and-functionality
Is that always the same big river? What's the name of the river?
I've traveled most on or over the Suriname river. The Suriname river does have a bridge connecting the capital (Paramaribo) with District Commewijne, but there are still motorized canoes (or ferry's) traveling between those cities, because some plantations in Commewijne - like Laarwijk - aren't accessible via roads.
!ENGAGE 10