I fail to see what I'm missing to get this achievement so all ideas are welcome. Because it's quite hard to find the right conditions for this one I'm rather hoping not having to go through the whole process of setting up a game and finding maybe 1 spot in which it's feasible again! Tia!
Achievement: An Engineer's Dream
Have a Canal, Dam, Aqueduct, Railroad, Golden Gate Bridge, and Mountain Tunnel in a city
I've numbered them accordingly. In the right lower corner the confirmation I've build railroad tracks from the timeline.

Achievement: An Engineer's Dream
Have a Canal, Dam, Aqueduct, Railroad, Golden Gate Bridge, and Mountain Tunnel in a city
I've numbered them accordingly. In the right lower corner the confirmation I've build railroad tracks from the timeline.