Interesting article about highway “capping”

Considering that this is being looked at for I-35, the air quality questions should be asked. Some say capping could improve air quality, others think the opposite. If it’s capped and the air pollution doesn’t leak through the cap — where does it go?

Personally I think it’s ridiculous that the state isn’t converting the tolled bypass into the new I-35 and preventing through traffic on the huge ugly polluting gash running through the middle of town. What a boondoggle.