An emergency closure is in place on Calbourne Road in Newport this afternoon (Thursday).
Island Roads says it is to enable tree maintenance work to take place.
It comes after a car collided with a tree on the road earlier, as previously reported by Isle of Wight Radio.
It is shut from its junction with Pump Lane to its junction with Betty Haunt Lane.
A diversion will affect Priory Road, Gunville Road, Forest Road, Yarmouth Road, Elm Lane.