The A1095 Halesworth Road was closed after a crash involving a single car which saw a person taken to hospital.
Police arrived on the scene of the crash close to Henham Park near Lowestoft at about 1.30pm, which saw one Vauxhall Corsa crash.
The extent of the person's injuries is not yet known, with the A1095 was closed between Quay Lane and the A12 junction as emergency services work to clear the scene.
Drivers were urged to avoid the area.
The road later reopened at 5pm on Sunday evening.
For up-to-date information about the county's roads, visit our LIVE Norfolk traffic map.
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