Build rails in the board game ticket to ride: Legends of the west

About Ticket to Ride Legacy: Legends of the West, from BoardGameGeek:

In Ticket to Ride Legacy: Legends of the West, players embark on twelve journeys across North America as 19th century pioneers. The campaign begins on the East Coast, with players working their way to the West from one adventure to the next, meeting challenges along the way. As in Ticket to Ride, completing your tickets will remain your primary goal, but you will need to develop other skills if you hope to overcome the unexpected events and your resourceful rivals. Game after game, route after route, you will continuously fill your vault with earnings. As the story progresses, you will open frontier boxes that unlock new rules, content, and many more surprises. In the Legacy style, Legends of the West is a unique experience molded by player choices. Each player has their own role to play, allowing them to change the way the story unfolds around them. Combined with evolving mechanisms that change as the game progresses, players will have a new experience every time they gather around the board. At the end of the twelve games in this legacy campaign, you will have transformed your game into a unique copy that you can continue playing for a lifetime.. -description from the publisher