The lanes were reopened just before 10 p.m. Tuesday.
There were major back-ups on the southbound Dan Ryan as well as the ramp to the Skyway.
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The fire broke out at about 7 p.m. No one was injured, but there is extensive clean up.
Some inbound lanes have also been impacted by clean-up operations.
The semi-truck was carrying new furniture and it all had to be unloaded to put out the fire.