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Small and Proper DCMI Service Interchange

Designed by Michael Gingrich as a compact free-flow interchange, as far as I know the DCMI is still hypothetical, although I'm hopeful we'll see one built IRL. I decided to finally try my hand at making one, and decided to flip the design, using tunnels instead of bridges. These things are not easy to make if made right, but I think it turned out really well.

This is a real DCMI, in that weaving is eliminated (entrances are never followed by exits) by crossing the left entrances as part of the two minor bridge crossings. Also, there's only two height levels (the tunnels are all at -9m). This makes the DCMI a very high capacity design, the kind that could easily be used for making a highway to highway interchange in the game, although here I built this as a service interchange, with just 4 ramps, and compactness prioritized. Although a very high capacity service interchange. It's only 32 blocks from exit to entry along the highway, and only 26 for the surface lanes.

I hope you like it.

Construction Cost: $48,470
Upkeep: $581/week

By the way, what got me to make one of these was looking at FeanorKND's DCMI which I really liked and which you should check out if you're looking for a DCMI with bridges instead of tunnels.