Overturned semi at I-635 and State An overturned semi at I-635 south of State Avenue about 8:15 a.m. slowed traffic. Several lanes were closed. I-635 northbound, north of I-70, was reduced to one lane while the accident was being cleared. Eastbound and westbound I-70 to northbound I-635 ramps also were closed. (KDOT photo) An overturned semi at I-635 south of State Avenue about 8:15 a.m. is slowing traffic. Several lanes were closed. I-635 northbound, north of I-70, was reduced to one lane while the accident is being cleared. Eastbound and westbound I-70 to northbound I-635 ramps also were closed. (KC Scout photo)