A game, heavily modded, like Cities: Skylines might do it for you. You can mod away most of the management minutae and just focus on the infrastructure, transit, and building. It's not hard to basically turn the game into a virtual model builder.

Here's some examples:

https://www.reddit.com/r/CitiesSkylines/comments/doxh7h/50_i...

https://www.reddit.com/r/CitiesSkylines/comments/bvxh5i/urba...

https://www.reddit.com/r/CitiesSkylines/comments/busrvi/topv...

https://www.reddit.com/r/CitiesSkylines/comments/boxbp2/expr...