If it was DFW, you’re almost certainly taking about the High 5 (exchange between I-75 and I-635,) or the Mixmaster, (exchange between I-30 and I-35.)
Both were marketed as a way to eliminate traffic between the two highways. Both are now notorious for always having traffic, because more people started driving after they were finished. I’m not sure which one is actually taller, but the High Five certainly feels taller because you have buildings on each side where you can look out and see that you’re level with their middle floors.
If it was DFW, you’re almost certainly taking about the High 5 (exchange between I-75 and I-635,) or the Mixmaster, (exchange between I-30 and I-35.)
Both were marketed as a way to eliminate traffic between the two highways. Both are now notorious for always having traffic, because more people started driving after they were finished. I’m not sure which one is actually taller, but the High Five certainly feels taller because you have buildings on each side where you can look out and see that you’re level with their middle floors.