UPDATE: Lanes of I-41 back open following crash

MENASHA, Wis. (WBAY) -- WisDOT says the lanes temporarily closed due to a crash in Winnebago County Friday afternoon are back open.

The crash, which happened at 3:11 p.m., caused multiple lanes to be closed for nearly an hour.

WisDOT announced all lanes were back open at 4:03 p.m.

The cause of the crash, which happened at US 10 Eastbound and State Highway 441, is still unknown at this time.

Authorities have not released the number of vehicles, nor the number of people in the vehicles and their conditions, at this time.

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WisDOT says the two center lanes are temporarily closed on I-41 due to a crash in Winnebago County near Menasha.

The alert was issued at 3:15 p.m. Friday.

At this time, it is unknown how many people and vehicles are involved, as well as any injuries.

Officials say the crash happened at 3:11 p.m. at eastbound US 10 and State Highway 441.

511 lists the closure is estimated to last for about one hour.

According to the Winnebago County Sheriff's Office Twittter account, drivers in the area should expect delays, and should move to the right outside lane, or they should take an alternate route.

Check back for new details as they become available.