NewsChannel5.com | Nashville News, Weather & SportsSome Treated For Effects Of Chemical Smoke

Some Treated For Effects Of Chemical Smoke

SHEPHERDSVILLE, Ky. (AP) -- At least 11 people have been treated for the effects of smoke from burning chemicals after Tuesday's train fire in northern Bullitt County.

Several CSX train cars derailed and burned just south of Louisville, shutting down a busy interstate highway and forcing evacuations. 

A CSX spokesman said the train was carrying hazardous materials. The blaze produced a massive column of black smoke in the mostly rural area.

Authorities ordered an evacuation near the wreck, including an elementary school. 

CSX spokesman Gary Sease reports the train consisted of four locomotives and 80 cars headed from Birmingham, Ala. to Louisville. 

He said 41 cars were loaded with freight and the rest were empty.

The cause of the derailment has not been determined.

A Kentucky National Guard unit was mobilized to help authorities check the quality of the air near the wreck.