Baton Rouge crews are inspecting the Mississippi River Bridge after a big-rig fireBATON ROUGE — Traffic is still crawling 15 hours after a major crash on the interstate this morning near the I-10 and I-110 interchange. An 18-wheeler traveling toward the Mississippi River Bridge crashed into a guardrail and caught fire, blocking traffic for multiple hours. "It was a big fire when crews first arrived," Billy Zachary with the Baton Rouge Fire Department said. More than 126,000 vehicles cross the New Mississippi River Bridge every day. Norma Jean Mattei, a past president of the American Society of Civil Engineers, explained the potential challenges inspection crews could face.