Services between Southampton Central and Portsmouth are cancelled, delayed or diverted while the line, near the River Itchen between St Denys and Woolston, undergoes a safety inspection.
All lines are blocked and disruption is expected until 10pm.
It is affected both Southern and South Western Railway services.
⚠️NEW #Woolston – Disruption to South Western Railway trains between Southampton Central and Fareham expected until 19:15
— National Rail (@nationalrailenq) October 26, 2024
A spokesperson for National Rail said: “Trains are unable to run between Southampton Central and Fareham.
“Woolston station will have no service.
“Southern will do their best to provide alternative road transport, but there may be a long wait. Please speak to station staff, where available.
“Your journey will take at least 15 minutes extra to complete.”
Passengers can use their tickets on SWR services between Southampton Central and Eastleigh, and Eastleigh and Fareham, at no extra cost.
Rail tickets are also being accepted on Bluestar and First buses.
