Tragic dream.

Today i have a very clear and well remembered dreams. Was kinda bad and tragic ones.
The dream took place in my local city. Driving to work. Its was raining and the whole road was totally flooded a almost up to waist line. I stopped at the big roundabout junction wanted to cross the road until i saw a flyover bridge which carry two lane highways collapse into rubble. Cars, lorries and busses all crash down the ground. I walk across the round junction and head towards the collapse flyover highway. I can see the passenger in solid mime stated with big eyes open but didn't even made an movements as if they were stoned. So as other passenger on other vehciles, as if time stop and stand still. Two bodies lying on the ground and both side of the bus, one person upper torso smack by huge lorry or something while the other lying down face upwards like got hit by something and bleeding. I was confused....
When i walk back to where i came from the dream becomes blurred and so i awake on this Sunday morning. Amazingly unlike other dream that i get in and forget this one i can remember and recall more vividly from others. What does this dream tells me? A sign? what??...