The break down happened at around 7.20am on Tuesday at J1b Ferrytoll near to the Queensferry Crossing and resulted in one lane being fully closed to traffic during rush hour.
Some drivers reported delays of up to two hours with traffic at a complete standstill on the bridge.
Traffic Scotland confirmed the lane had reopened at around 8.20am but drivers were still advised to be aware of congestion in the area, in particular at J3 Halbeath.
The congestion was made worse by diversions in Inverkeithing following an overnight fire at an old primary school in Roods Road.
Some local roads were closed while emergency services dealt with the incident.
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