An accident involving a semitruck closed southbound Interstate-17 Tuesday night, north of Cordes Junction. DPS says the accident happened at around 7:15 p.m. The semi overturned, blocking both lanes of the highway, which forced the closure. Traffic was taken off at the State Route 169 exit so crews could clean up the scene and law enforcement could conduct their investigation. DPS reports only minor injuries from the accident. Southbound I-17 was reopened at around 2:30 a.m. Wednesday morning.