A California man is seriously injured after a semi truck crash in Walton County.
 
He was driving eastbound on Interstate 10 in the outside lane.
 
The semi had a mechanical failure causing it to travel in a southeastern direction.
 
It continued traveling in a southeastern direction off the paved part of the road and hit several trees.
 
The truck rotated in a counter clockwise direction and the trailer continued traveling in a southeastern direction.
 
A car in the top section of the trailer broke loose from its tie downs and came through the front of the trailer and traveled into the wood line.
 
The semi truck came to final rest on the southern grass shoulder facing in a northwestern direction.
The trailer came to final rest on the southern grass shoulder facing in a southern direction.
 
The drive, Igor Stephon Maslyanka, of California was taken to Fort Walton Beach Medical Center with serious injuries.