Slick spots cause semi to slide off ramp at Lake Hefner Parkway

A slippery mess Tuesday morning on the southbound Northwest Expressway exit from Lake Hefner Parkway.

A car hit a patch of ice on the ramp and couldn't make it all the way to the top. It caused a traffic backup.

Then a semi jackknifed on the exit ramp and slid off the ramp.

The exit is closed until ODOT crews can sand the ramp and get the semi out of the way.

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