I belive you can from very far away, that is how I noticed it the first place. Also, if you use the third person view (number 2) you can see it more clearly.

I have just finished setting up my new profile with promods 2.5. The only map mods it has are promods and promods ME. I came across a flying highway (the M7 in Hungary) just outside Budapest. Here is what it looks like and where it is located (attached files) I do not believe this is an SCS error du...