Two people died in a multi-vehicle, chain reaction crash that shut down northbound Interstate 75 at Union Centre Boulevard in West Chester, according to the Ohio State Highway Patrol's Butler County post.
It's not clear when the highway will reopen.
The southbound side of the highway was closed, too, over a crash earlier this morning. One lane has since reopened.
Earlier this morning, one person went to a hospital from yet another crash on northbound I-75 near I-275, a township spokeswoman said.
An overturned semi tractor-trailer blocked all lanes of northbound I-71 at Fields Ertel Road in Sycamore Township for more than an hour. The highway is open, but major delays are slowing both sides of I-71.
Eastbound I-275 was shut down at Winton Road in Forest Park for about an hour earlier this morning. It reopened just before 5:30 a.m., closed again a half hour later and has since reopened.
Multiple crashes began coming in shortly after 4 a.m. and continue at a dizzying pace.
Temperatures are below freezing at 29 degrees and wind chills are in the teens.
Police across Hamilton County have repeatedly asked dispatchers to scramble salt trucks to treat the icy highways.
The westbound I-275 bridge over I-71 is "covered in ice," dispatchers said.
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