The new rail motorway linking Spain to the UK has fallen victim to numerous assaults by migrants.
The VIIA Britanica, launched in March this year after multi-million investment, was halted on Monday because of repeated efforts by migrants to break into the trucks being transported to Britain.
Europe’s longest rail motorway carries unaccompanied lorries from Spain through France to the port of Calais. P&O ferries continue the journey, still unaccompanied, across the Channel to Dover.
The initial launch date of January was delayed to 30 March because of safety concerns arising from the migrant situation in Calais.
Now services have been halted until September due to a "resurgence in migrant intrusions in past weeks," port authorities said in a statement.
In their persistent attempts to enter the UK, migrants try to get into the trailers, often by tearing the tarpaulins. In the process, merchandise has been destroyed. Client confidence declines as the costs rise.
The rail link exchanges a 1,200 kilometre road trip for a 22 hour train journey across France. VIIA Britanica had aimed to save the environment of 50 million trips and cut out 50,000 tonnes of CO2 emissions each year.
Officials in France estimate that some 4,500 migrants are in the Calais area.
