Thanks for the input. I've been mainly focusing on fixing the floating trees, due to the hilly landscape I'm running into quite a few, both main roads are in and work (547,548). I've run a fair amount of missions and the AI don't seem to want to go for a swim, they cross at the sand bars. I still have to set up the ILS for the landing strips (3). I'll test the AI river traffic this weekend.
heres a pic of the map in wrptool