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Shorter Stack Interchange (27m)

This is something I had been meaning to do for a while. There are any number of very good stack interchanges on the workshop already, but the ones I've found at least have all been 36m high, a third taller than this. I reduced the grade separations to 9m to make it shorter, reducing the only real drawback of the stack interchange. This means the ramps could all be kept smooth for high speeds, and the interchange kept at a moderate size (it's 47 blocks from exit to entry in all directions). And it will be less of an eyesore in your city. Anyway, I hope you like it. Thanks,

Construction Cost $60,640
Upkeep: $640/week

I also made a version for ground-level highways: http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=456663490

And an upsidedown stack, with the left-turn ramps under the highway as tunnels:
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=455321885