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Emergency services have been called to a "medical emergency" on the M2 bridge.
One of the four lanes is blocked on the London-bound carriageway of the M2 Medway Bridge, just before Junction 2 A228 Sundridge Hill, which is the exit for Strood and Rochester.
Despite the closure, traffic is said to be coping well.
The emergency services have been contacted for more details.
Read more: All the latest news from Medway