Hi Morris,
Welcome to the board. That's a tough question about the OTR work and what it entails as well as the strain on a relationship being gone three weeks at a time. Of course, ideally, you'd find a woman who would want to ride with you and see the country. Let me say first off, the just as sure as you are breathing, a woman like that most definitely exists in any country, including the FSU, however finding her could be a bit of a challenge.
Do you have time to travel multiple times a year to meet, build a relationship? Or are you planning to try to compress the process into a single trip for marriage?
My personal experience is that I could have been married five times so far, had I filed the visa immediately after the first trip, or very early on in the process but the long term success of those possible marriages remain in question (which will never actually be answered - perhaps if I HAD married after one visit, I could have gotten lucky and the relationship(s) would not have faltered, if indeed the death was due to stresses, etc.).. Or, I could have married and truly regretted it.. again, we'll never know. Being selective and patient is important (I think) in this process. It's absolutely easy to get married to an FSU woman.
What about children? A woman without a child (which seems a must for you for the obvious reasons) will generally want to have them, and then you're back to the difficulty of being gone three weeks a month. What I am getting at here, is yeah, a woman may very well want to travel with you, see the country, live the nomadic life style of an OTR trucker -- for a time, but generally would want to settle in to her home at some point.
I'd say it's possible, of course, but certainly won't be an easy venture and really may not be worth the time and effort it may require to find a woman willing to live in a truck most of the time. Never say never, but unlikely that any of the big city girls would be interested in such a life style so you'd probably need to be looking in smaller rural areas (not absolute, just a general hunch) so probably will not have much background in English (not a complete deal breaker, but another rather large challenge). And then there's finding the rural lady... she's probably not going to be on a typical agency or even dating site.. how to find her? A good question to which I really don't have an answer...
Those are just some quick first thoughts.. I'm sure others will chime in with others..
And... Welcome to the board!
Dave