If you are starting in 1850, for some reason the road object is available starting 1850, but railroad one from 1863.

Took me an hour+ of digging to figure it out. The start date can be changed - in one of the files where you would not expect to be looking. I can look it up on my home PC, if interested.

Thank you, it's obvious, I was looking in the wrong direction because before my short hiatus this mod did not have this issue and I didn't come to the idea that the "year" entries are not the same anymore.

When the tunnel entery is made I can’t continue building the rest of the road. Can’t choose which road I like (one way in or out )

F'me, that has been driving me crazy for 3 hours now! thanks for this post!

it has disappeared again. My in-game year is 1955 and it is not available