Suspension Bridge in west coast makes my tires go flat.

Whenever i try to go on the suspension bridge in the west coast my tires always become flat. I do not know if this is normal but i have seen another person on youtube go over it without any problems. But when i go over it with any vehicle my tire goes flat and falls through. BTW by the suspension bridge i mean the top part not the bottom part where you can through the tunnels at the end. Just wanted to see it this is normal.

 

Sorry i can't screenshot right know but i mean where the train goes not where the cars go beneath it, theres like a bunch of rails above the normal car route
--- Post updated ---
I can screenshot tonight when i get home and go on my desktop

 

Yeah it happens to me too

 

The OP means this

 

Exactly

 

Well, you aren't really supposed to be up there in the first place so it's no surprise that the top of the bridge has somewhat glitchy textures. That is a mod I've been thinking of making though, to fit standard-gauge rails to the bridge and rail line in WCUSA, and making them usable for train mods...