France – Construction work for water projects – Redevelopment works on metal culvert OT1896 - A63 Motorway

Opportunity description

Lot 1: creation of a DN800 relief culvert by pipe jacking; Lot 2: rehabilitation works by lining (GRP shell), ecological improvements and headwall improvements Description: works to create a cross-drainage structure by pipe jacking, beneath the A63 motorway, municipality of Saint-Jean de Luz at PR 189.600 - Site preparation, including completion of a G3 geotechnical investigation - Presence and activity of safety and environmental officers - Site setup, construction of access routes and installation of site fencing - Installation of a pipe-jacking shaft using temporary sheet-pile shoring (12x4 m enclosure, creation of 2 thrust reaction walls with the creation of a support block and 4 DN75 nails drilled into the motorway embankment, each 28 m long - Pipe jacking of a DN800 steel culvert over 100 m parallel to the existing DN1750 metal culvert - As-built documentation Description: Rehabilitation works on cross-drainage structure 1896, a metal culvert located on the A63 motorway, municipality of Saint-Jean de Luz at PR 189.600 - Site preparation - Presence and activity of safety and environmental officers - Site setup, construction of access routes and installation of site fencing - Installation of a watercourse diversion with cofferdams and a pumping system - Earthworks (420 m3) - Installation of Ø1200 GRP elements in the existing structure over a length of 100m, injection of the annular void, construction of sloped concrete-set riprap up to 1m above the culvert (45 m3) - Construction of pre-dams downstream of the structure - As-built documentation Procedure: open. Estimated value: 680,000 EUR. Review the original TED notice for the complete requirement, lots, amendments and attachments.