 Issues have included the locking pin falling out of place, cracks forming in the supporting structure, and jamming of the swing mechanism, which has caused heavy traffic delays and tailbacks.In October 2003, the bridge was closed for five days for urgent repair work, after a vehicle collided with a safety barrier.Later inspection discovered that the York end of the bridge was about to fail due to three large cracks in one of the supporting steel plates, which ran the full length of the bridge.