Assistance and external control services for civil works relating to the widening of the A57 motorway between the Benoît Malon and Pierre Ronde interchanges (approximately 7 km).

Assistance and external control services for civil works relating to the widening of the A57 motorway between the Benoît Malon and Pierre Ronde interchanges (approximately 7 km) carried out under traffic, including:

- technical review and monitoring of QAPs, procedures, test boards, controls performed by companies,

- advice and technical control relating to civil engineering works, civil engineering structures, massifs (PPHM, acoustic screens) and restraint systems,

- technical control of the supply and implementation of reinforcement and concrete,

- advice and technical assistance to project management in these areas.

The work is scheduled for day, and interventions at night and weekends are expected.