The A379 near Dawlish in South Devon was closed in both directions throughout the morning after an accident involving a motorbike.
The female rider, who was found a by a pedestrian, was taken to hospital with serious back injuries that are not thought to be life threatening.
Diversions were in force for several hours until the road was cleared.
More top news
Starting cloudy. Rain will move in mid-afternoon hitting the North Cornwall/North Devon coast first. Stronger winds but very mild at 14 C
Starting cloudy with rain moving in mid-afternoon. West Somerset turning wet first. Made more unpleasant by stronger winds. Highs of 14 C
Large barriers have been installed in Bath for the first time, ahead of the Christmas Market because of the increased terror threat