tl;Dr "They make them higher, because they get a better elevation to let the traffic go faster"
They don't explain how that makes traffic faster, though.
this post was submitted on 13 Jan 2025
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Maybe the large transport vehicles don't have to slow as much (in theory) since there's a longer run up and a less severe kink to make the turn? Purely a guess.
It’s amazing how infrastructure like this is built. Cool article.
I’ll share that if you liked this article, I recommend checking out Practical Engineering’s video on Texas high rise interchanges! https://youtu.be/-16RFXr44fY. Pretty cool info there too.