[MrDarth]

Hello,

Is that possible, is there any function, to remove objects of real san andreas map? I mean for example, remove trailway bridge across SF and LV and so on.

[a_big]

Nope it's not possible in scripting wise.

[gold]

Nope, you will need to remove them, by hand from savefiles & img.
there is no other way

[Spectre]

Nope...
You COULD however block an object by putting something else OVER it...
I've seen where some folks have put a large, non-enterable building over a smaller one...
Or use those "shipping containers" to block access to a long, wide areas...

There's some nice new "force field" objects (18887-18889, the last two are invisible) that might suffice...
Good luck...