The lorry sustained significant damage in the incident.
A man has been taken to hospital after an artic left the road in Offaly.
The crash occurred between Daingean and Daingean Nurseries this afternoon.
The 40 foot lorry, which was substantially damaged, jack-knifed and ended up in a nearby field.
One man was taken to hospital for minor injuries.
The R402 was closed for a short period, but has since re-opened.