When you dream that a road is burning, or you see fire on the road in a dream, this is a sign of destruction and accidents on the road which will lead to fire outbreaks. It may reveal that a fuel tanker will end up colliding with another car, hence causing a blast on the road. This is always accompanied by massive deaths.
The fire may also be caused by fallen electric cables coming in contact with vehicles on that specific road. Whichever the cause, this fire will suddenly lead to the destruction of property and loss of lives.
This dream is a warning that you as a watchman (Ezekiel 33:6-7) may sound the trumpet and intercede on behalf of these people and cancel this even through prayers. As Christians, we have authority at our disposal to turn things around using the weapon of prayer. (Matthew 18:18-20).
Also remember to dedicate this dream for destruction, lest innocent lives are put in danger because of your ignorance. Take action in prayer and see God changing the circumstance for His glory.