Motorists were facing long delays on the N52 near Tullamore.
Emergency services have left the scene of a crash in Offaly.
The incident took place on the N52 between Tullamore and Kilbeggan this afternoon.
A male driver aged in his 30s was brought to Midland Regional Hospital Tullamore for medical assessment.
Gardaí say the road is reopen and no further delays are expected.
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