Complex sentence: Attempts were made to limit the number of people crossing the bridge: this led to long queues but dampened neither public enthusiasm for what was something of a white-knuckle ride, nor the vibrations themselves.
Split into simpler sentences: Attempts were made to limit the number of people crossing the bridge. This led to long queues but dampened neither public enthusiasm for what was something of a white-knuckle ride, nor the vibrations themselves.