It has been closed and shut off because hobos and people who have no value for the rules kept unflipping vehicles when they were driving over the bridge making the vehicle go under the bridge and 9 times out of 10 blow up. This caused alot of issues so the best way to solve it was to close the bridge.
Also, I've heard staff want people to use alternative routes into and out of Kavala!
(My understanding - I may be completely wrong)