AK,
Looks like your road will be towards the back?
My "river" is actually going to be very wide, if not a sea, no bridge. Your road will lead into the Scorpions and Orcs side of my display. I can easily meet your road.
I will have flexible terrain from 32 studs from the back of the display to 80 studs from the right. Normally my roads are 8-wide filling an 8cre, so for example road between 32 and 40 studs from back. It looks like your road may be between 44 and 52 studs from the back, this is fine, I can make a custom road tile to make this adjustment. Is that a lake in your lower right? I have a moat towards the front, maybe we can coordinate and connect the moat to your lake.
Oh, Josh, I tentatively have a tan road leading off my left edge between 112 and 120 studs from the rear (72 and 80 studs from the front) if you want to match up with that. Oops... Hmm... Got something to fix in my planner. I also have a road at an elevation at an odd height closer to the back, may need to re-arrange things...
Fortunately my display is very modular (though there is going to be one pretty big module center-rear... I am building little 1/8 scale versions of my modules so I can move things around and plan.
Frank