You're correct - they aren't typically used for interstate-interstate interchanges (those tend to be far more complicated). Here's a new example that opened a

You're correct - they aren't typically used for interstate-interstate interchanges (those tend to be far more complicated). Here's a new example that opened a few years ago... https://www.google.com/maps/place/Haymarket,+VA+20169/@38.8176254,-77.6450501,1333m/data=!3m1!1e3!4m6!3m5!1s0x89b66613e8cbf987:0xf898225f4997dc7c!8m2!3d38.8120591!4d-77.6363806!16zL20vMDEwbm1f https://www.google.com/maps/place/Haymarket,+VA+20169/@38.81... It handles the intersection of a busy interstate and a busy local highway/stroad. Here's a new interchange just down the road from the first, same interstate, but even busier highway. Instead of a diverging diamond, it's a bowl of spaghetti. https://www.google.com/maps/@38.848214,-77.4319326,1404m/data=!3m1!1e3 https://www.google.com/maps/@38.848214,-77.4319326,1404m/dat... And the infamous "Springfield Mixing Bowl" that's the bane of suburban DC/VA commuter's existence... https://www.google.com/maps/@38.7874973,-77.1801693,4741m/data=!3m1!1e3 https://www.google.com/maps/@38.7874973,-77.1801693,4741m/da... Two massive interstates, plus interchanges with busy local stroads in close proximity.