Train services between Witham and Hatfield Peverel will be subject to delays and cancellations due to bridge damage.
The damage to the bridge, in Blunts Hall, was discovered yesterday.
It is still unclear what happened, although the damage was not caused by a vehicle hitting the bridge.
Disruption is expected until 2pm tomorrow as services have to operate at a reduced speed in the area.
For full details of the trains affected, visit journeycheck.com/greateranglia/
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