Navigating road access for MT antelope ?

[Lehman20]

Im looking to draw a rifle tag most likely for unit 620 in mt in 2027. i should have 7 bonus points with a good chance of drawing. All of my DIY western hunts have been in large tracts of national forest where we didnt have to worry about road access, how do all of you Non Res hunters go about sorting what roads are able to be traveled to access tracts of public lands and what ones are off limits, i have gohunt maps and onx but i have a hard time understanding states access laws as well as what roads you can or cant travel through private. i appreciate any help / advice , thanks !