landscape spline

need help with landscape spline when i zoom out my road mesh disappears and i need to be able to see the road at a distance any help would be great

It’s caused by round-off errors due to limited precision in the z-depth. Raise the road off the surface one or two units and bevel the road edges down to fill the gap. Also, I don’t remember if spline roads have culling, but make sure there’s no culling distance set.