Train passengers faced brief disruption between Ipswich and Needham Market after a lorry struck a railway bridge.
Services between the two stations were cancelled or delayed by up to 30 minutes following the collision, which happened in Ship Lane, Bramford, shortly after 2pm.
After Network Rail engineers examined the damage, all lines were reopened.
Journeys between Liverpool Street and Norwich, Ipswich and Cambridge, and between Ipswich and Peterborough, were temporarily affected.
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