Emergency services were called to the scene of a collision between the Cleddau Bridge and Waterloo roundabout in Pembroke Dock this evening.
The road was closed for a time around 5.15pm but has since been re-opened.
Police diverted traffic while they dealt with the scene.
The Western Telegraph live traffic feed stated at the time: "A477 Waterloo Road closed, slow traffic due to accident, a bicycle involved between Waterloo Road and A4139 London Road (Waterloo Roundabout).
"Affecting traffic travelling between Pembroke Dock and Honeyborough."
There were long queues around the area for a time.
There is currently no further information on any injuries.
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