Motorists face delays in Cosham High Street today following a level crossing gate failure.
Officials at the Romanse road traffic management centre advised drivers to avoid the area as engineers worked to solve the snag at Cosham High Street.
Network Rail was alerted to the incident at midday.
The gate is being manually operated while workers attempt to get it working automatically again.
As a result there are minor delays to traffic and train journeys.
A Network Rail spokesman said: ‘The level crossing gate isn’t working properly.
‘Our guys are on site and one of them is operating the gate from there.’