UPDATE: All lanes are now reopen. Delays continue.
MOUNT PLEASANT -- A crash closed all northbound lanes of I-41 at WIS 20 in Racine County Thursday morning, the Wisconsin Department of Transportation said.
The closure is expected to last at least two hours. Drivers are being funneled off the interstate through an off-ramp at WIS 20.
There's no word yet on what caused the crash, or if there are any injuries.