 Road construction has made I-75 a mess for months. You need to know when it's closed. I just looked at the 11-mile trip from 675. Why? Police and medics are on scene. And where to get around it. If you're on Northbound 75 near West Carrollton High School. That's what triple-team traffic is all about. Dayton's most frequent traffic. 1290 and 957. WHIO. Depend on it. WHIO News Time, 1105.