The Garrison Chapel Road train crossing is covered in coal and distorted metal.
Indianapolis Railroad Company officials said they have ruled out operator error and heat related issues as possible causes of the wreck.
Even though the rails had a safety inspection Friday, company spokesperson Eric Powell said they have no obvious explanation for the derailment.
“This is kind of like the CSI of crash investigations,” he said. “We need to get in there and look at any rail wheels and some of the pieces of rail we may not have unearthed from under the cars yet to see if there were any breaks or anything like that.”
Garrison Chapel Road is closed to through traffic until the rails can be cleaned and fixed.
Powell says the company expects to have temporary rail lines in place by Wednesday or Thursday.