The NTSB has wrapped up its on scene investigation into last weeks deadly bus accident on I-44 that killed two teenagers. Eight investigators from the NTSB will be leaving St. Louis today for Washington, D.C. The investigators have concluded inspections of the buses, semi cab, pick-up from the accident and interviews witnesses an mechanics. They also looked at the layout of I-44 and warning signs leading up to a construction zone on I-44.

The NTSB says it could take up to a year before the findings are released on deadly accident that claimed the lives of a 15 year old from St. James, Mo. and a 19 year old from Sullivan, Missouri.

'LIKE' KPLR on Facebook