UPDATE: 6:10 p.m.
I-43 northbound lanes are reopening after a law enforcement investigation shut down the highway for more than two hours.
I-43 northbound lanes are completely shut down just north of downtown due to a law enforcement issue.
I-43 NB full freeway closure - traffic off at Fond du Lac Ave. and back on at Locust. Expected several hour duration.
— Milwaukee Sheriff (@MCSOSheriff) November 16, 2018
The Milwaukee County Sheriff says delays could last several hours.
Drivers should avoid the area. Find an alternate route here.