MADISON, Wis. -

The lanes of eastbound I 39/90 reopened after they were closed seven hours because of a semi crash south of Madison early Friday morning.

The incident happened just before 12:15 a.m. Friday on I-39/90 eastbound, about two miles south of the Beltline exit. The lanes remained closed until about 7:15 a.m.

Traffic was detoured on State Highway 73 and got back on the interstate near Edgerton.

The details of the crash have not been released. But the Dane County Sheriff's Office said there were no serious injuries.