One lane of the A52 heading east out of Notttingham was closed after the second accident on the same spot within 24 hours.
One of the two eastbound lanes close to the Gamston Lock roundabout was shut just after 3.20pm on Saturday.
The incident involved a motorcycle and the rider was seen lying injured by the carriageway before being taken to hospital by ambulance.
Notts Police said he suffered minor injuries and no other vehicles were involved.
Queues built up approaching the roundabout creating long delays until the scene was cleared at just after 4pm.
It followed another crash on almost exactly the same spot of the road on Friday afternoon involving a car.
This incident also closed part of the road while debris was cleared.
Emergency services reported several other minor accidents on Saturday after thunderstorms and heavy rain covered roads with standing water.
