Heroic Maps gave you those bridges, now they give you something to cross with the release of their wide rivers pack.
From the release:
A printable geomorphic dungeon floorplan compatible with any RPG/Dungeon-Crawl game. Use as a standalone gameboard, or combine with any same-scale tileset.
Contents: Ten 10×10 battlemaps showing various wide river configurations. Just over half the tiles depict pieces of a 20ft river, including straight lengths, fords, forks etc (including a connecting piece linking Wide Rivers to our Rivers Core Set). The rest of the set allows you to make infinitely wide rivers, with tiles showing the river bank, allowing you to decide how wide the river is (or could even form the shore of a lake or inland Sea). This set also links to River Core, and features a small island . Use our Bridges set to cross any river you make.
Also included is a set of 300dpi full size jpgs, for poster printing or VTT, in both gridded and gridless versions. (n.b. gridless version only in jpeg format)