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FLORISSANT, Mo. (AP) - An investigation continues after a 35-year-old man was struck and killed by a semi while trying to cross Interstate 270 in north St. Louis County.

Police say Renell Clower of St. Louis was crossing the westbound lanes in the Florissant area about 2:30 a.m. Tuesday when he was struck by the tractor-trailer.

The accident shut down all westbound lanes for several hours. All but one lane opened by 7 a.m.

Police aren't sure why Clower was walking on the interstate.

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