By csimmonds@thekmgroup.co.uk (Cara Simmonds) Part of a tunnel has been shut due to a serious collision involving a motorcyclist. The A289 Medway Tunnel Westbound has been closed since 2.35pm. There is currently queueing traffic from Maritime Way to Anthonys Way. An air ambulance has also been seen circling the area. Avoid getting stuck on Kent’s roads by keeping up-to-date on all of the latest traffic and travel news here or by following our live blog. Listen to kmfm for regular travel updates. The emergency services have been asked for more information. More to follow.