IN IMAGES, IN PICTURES. A 42-hour marathon yard to build a new bridge

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Since yesterday afternoon, Saturday, November 9, an off-the-odd yard started at two steps from the ring road, east of Nantes. It involves laying a new 2,500 tonne rail bridge in 42 hours.

SNCF tracks linking Nantes to Paris are closed for 42 hours until tomorrow morning, Monday 11 November. Objective: to slide a new rail bridge. In the future, it will provide better access to the future SNCF site in Blottereau, which will replace that of Nantes State, currently on the island of Nantes. Relocation planned for 2020. | JÉRÔME FOUQUET / WEST FRANCE


  • SNCF tracks linking Nantes to Paris are closed for 42 hours until tomorrow morning, Monday 11 November. Objective: to slide a new rail bridge. In the future, it will provide better access to the future SNCF site in Blottereau, which will replace that of Nantes State, currently on the island of Nantes. Moving planned in 2020.
    SNCF tracks linking Nantes to Paris are closed for 42 hours until tomorrow morning, Monday 11 November. Objective: to slide a new rail bridge. In the future, it will provide better access to the future SNCF site in Blottereau, which will replace that of Nantes State, currently on the island of Nantes. Relocation planned for 2020. | JÉRÔME FOUQUET / WEST FRANCE

Exceptional operation this weekend on the side of the future Blottereau site of the SNCF, east of Nantes. Technicians and workers have 42 hours, the time of interruption of the train service between Nantes and Angers, to lay a new railway bridge of 2,500 tons and 40 m long and 10 m wide. It will provide access to cars by road as well as the passage of trains through the railroad tracks installed on the bridge.

From Monday, November 11, around 9:30, everything will be ready to allow the trains to borrow again this section. "For a week, the time to stabilize the tracks, the train traffic will simply be slowed to 40 km / h on this portion instead of the usual 120 km / h," explains Jean-Marie Garnier, project manager for SNCF Reseau.

A "snail" of 2,500 tons that is slid at a speed of 5 m per hour. | JÉRÔME FOUQUET / WEST FRANCE
Thirty-five to forty people, on average, are mobilized on the site led by SNCF Reseau. | JÉRÔME FOUQUET / WEST FRANCE
As the bridge progresses slowly, rails are laid to slide it. | JÉRÔME FOUQUET / WEST FRANCE
A system of pushers and cylinders, installed on the construction site rails, makes it possible to advance the reinforced concrete structure with a thrust of 125 tons. | JÉRÔME FOUQUET / WEST FRANCE
During the forty-two hours of the laying of the railway bridge, the SNCF line is interrupted between Nantes and Angers. Replacement buses are set up. | JÉRÔME FOUQUET / WEST FRANCE
The entire environment of the new bridge had to be cleared in a short time to allow it to advance to its final location. It will be backfilled and the tracks reinstalled in a few hours in the night from Sunday to Monday. The return to normal traffic is expected Monday, November 11, around 9:30. JÉRÔME FOUQUET / WEST FRANCE
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IN IMAGES, IN PICTURES. A 42-hour marathon yard to build a new bridgeOuest-France.fr



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