A wreck has closed two of the five lanes on Interstate 85 southbound near W.T. Harris Boulevard Exit 45 in Charlotte on Thursday.
The left and left center lanes are closed, state highway officials said.
The wreck happened about 8:30 a.m., and traffic is backed up.
About 9:15 a.m., emergency crews were responding to a report of a tractor-trailer on fire at Providence Road and I-485.
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Charlotte-Mecklenburg police are investigating 24 wrecks as of 8:45 a.m., including ones with injuries on West Arrowood Road at Green Ridge Drive, on West Brookshire Freeway, at The Plaza and Aintree Road and in the 3800 block of Johnston Oehler Road in the University City area.