Two days since a series of crashes killed six people. Parts of I-95 southbound are STILL closed while the Department of Transportation looks for any structural damage. 3 Good Evening everyone. We're revisiting the scene where two, fiery crashes happened on I-95... Just 20 miles apart. The first crash happened Saturday near mile marker 288 in Palm Coast. Troopers believe the backup from this crash caused the second wreck near mile marker 301 in Saint Johns County. Troopers say a truck driver, named Carol Pennington smashed her tractor trailer into the back of another car, causing a chain reaction and a massive fire. In total-- 8 cars were involved and 3 commercial vehicles. Channel 4's Heather Leigh has been following this case... And joins us now live from where DOT is trying to figure out how much damage there is on the roads. Heather? 3 3 3 PKG:) The Florida Department of Transportation spent the day on I95 near mile marker 301 in St. Johns County... drilling through flame damaged asphalt and picking up debris left over from Saturdays crash...The flames spread over 300 feet of roadway...SOT: Gina Busscher, FDOT Public Information Director, Northeast Florida, 02:09 "We know that the top layer of asphalt was damaged, which is the layer you travel on, it's called the friction course, it was damaged, but we also need to find out how far the fire went down into the pavement. So we're going to core or take a sample in the underlying asphalt layer to see if there is damage as well." FDOT says the core sample will determine how much of the roadway needs to be replaced...it says the road would ultimately fall apart if it didn't replace all of the damaged pavement ...SOT: Gina Busscher, FDOT Public Information Director, Northeast Florida, 02:43 "The parts of the asphalt would start coming up, chunks, the rock in it would start peeling off. It has a glue or something that keeps it all together. It's like tar, and once that Tar got hot, and it kinda melted away than there would be problems as well with drainage when it rains. The top layer of asphalt has rock in it that allows the water to go down and out on the side." FHP says it's taking its time in terms of figuring out exactly what went wrong... so the families can have closure. TAKE SOT: Sgt. Dylan Bryan, Florida Highway Patrol, 02:35, "We want to find out the final chapter to these peoples lives. Our thoughts and prayers go out to the families of these victims, and everyone involved because they had to experience such a tragedy. 02:46, "We want to find out what happened, Instead of hurrying through things, we want to take our time, not leave a stone unturned and find out exactly what happened for the victims families." 3 These are the names and ages of the 6 people who died in those crashes. The youngest -- just 1-years-old. Several others were injured.