[Innsertnamehere]

There is something similar in toronto where the bloor line crosses the don valley. It runs under a bridge built 45 years before the subway. The geniuses of 1919 actually included a lower level to allow for an eventual streetcar tunnel to cross the valley. It ended up getting used for a subway rather than a streetcar tunnel, but still amazing forward thinking. It is also on a much larger scale than that, I think the bridge is 5-600m long.