I don't know if they designed it with highway expansion in mind... The way the interchange appears to be designed, it could probably accommodate a widened I-35 - but I'm honestly not sold on it's necessity right now. Sure, we have traffic - but honestly, our traffic is really not that bad. Granted, I only have to deal with it from downtown to 240, but from what I've seen, it's nothing like the traffic nightmares that places like Dallas or Austin encounter. I'd wager that the I-44 corridor between I-40 and I-240 actually experiences more congestion - and I think a lot of that is poorly designed interchanges at I-40/I-44 and I-44/I-240.

But I digress - it looks like it could accommodate a widening of I-35.