# Remplacement du pont ferroviaire sur la Seine à Varennes-sur-Seine et la Grande Paroisse Publisher: CapexCue Canonical dossier: Dossier reference: release 1 (7bdf8974-636d-4012-b8be-c957017f5276) Released project intelligence Oldest supporting observation: 2026-10-03T18:21:19.765296+00:00 Dossier released: 2026-10-15T18:17:34.392814+00:00 Source report dates and capture dates are listed per fact below; neither establishes an event date. ## Project summary Remplacement du pont ferroviaire sur la Seine à Varennes-sur-Seine et la Grande Paroisse SNCF Réseau’s project is to replace a three-span metallic railway bridge, about 143 m long, across the Seine between Varennes-sur-Seine and La Grande Paroisse. The bridge carries line 746000 between Corbeil-Essonnes and Montereau, used by suburban, regional and freight trains. The planned replacement is a steel-beam deck integrated into concrete for ballasted track, with the existing supports retained and their foundations strengthened. The 12 piles specified for the C3 abutment are separate from the river-pile figures: the dossier listed 32 piles in the Seine’s floodplain, while the latest sizing reported to the authority’s rapporteurs indicated that 8–12 should be needed there. The environmental authority opinion adopted on 24 July 2025 described an approximately two-year works plan, with a January 2026 start planned, deck replacement targeted for August 2027 and completion planned for January 2028. These are planned dates reported in 2025, not confirmation that the works occurred. The opinion described three work areas and stated that river access would be prioritised, with land access also planned. The operation was estimated at about €52 million excluding tax, including €38 million for the bridge. The estimate was supplied orally to the rapporteurs during their site visit; its value year and the share attributable to environmental measures were not specified in the dossier. The opinion noted that the project’s ecological assessment and mitigation still needed updates: although the dossier assessed residual effects on protected species as not significant, the authority called for compensation and an updated derogation dossier for several groups, and said effects on the protected thick-shelled river mussel from river works could not be ruled out. The opinion assesses the impact study and environmental treatment; it is expressly neither favourable nor unfavourable and is not an authorisation decision. ## Evidence limits and unknowns - The opinion adopted on 24 July 2025 gives planned dates but does not establish whether the works started, their current status, or whether they were completed. - The supplied opinion does not establish the outcomes of the environmental-authorisation or protected-species derogation procedures. - The final number of piles in the river is not established: the dossier listed 32 in the floodplain, while the latest sizing indicated 8–12. The opinion later reported that the proposed vessel waiting area was abandoned, while an existing right-bank area was under discussion as an alternative; it does not establish the final arrangement. - The opinion does not confirm final ecological survey results, compensation decisions, or completion of the proposed 30-year management agreement for the wetland compensation site. - The supplied opinion does not identify a contractor, procurement award, or financing arrangement. Current purchasing availability: unknown. Source-dated plans do not establish current progress or available supplier packages. ## Project metadata Country: France Region: Europe Physical assets: Railway Derived from the exact released evidence; unresolved fields remain unclassified. ## Project category Transport and logistics Derived from the reviewed scope statement; delivery stage remains unclassified. Replace the existing three-span metallic railway bridge, about 143 m long, with a new deck of steel beams integrated into concrete for ballasted track. The new deck is specified as 143.92 m long, compared with 142.80 m for the existing deck, and is intended to increase clearance below the bridge by 49 cm to 6.1 m. The existing supports are to be retained and their foundations strengthened: 12 piles are specified for the Varennes-sur-Seine C3 abutment, while other supports are to be reinforced by cement-grout injection. Separately, the opinion records a temporary river-pile discrepancy: the dossier indicated 32 piles in the major riverbed, while the latest sizing was said to require 8–12; this is distinct from the 12 piles specified at C3. Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 Project overview Oldest decisive evidence: 2026-10-03T18:21:19.765296+00:00 Newest evidence: 2026-10-03T18:21:19.765296+00:00 Knowledge reviewed: 2026-10-15T18:17:32.698689+00:00 Publication reviewed: 2026-10-15T18:17:32.698689+00:00 ## Name Remplacement du pont ferroviaire sur la Seine à Varennes-sur-Seine et la Grande Paroisse Status: reported Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Scope Replace the existing three-span metallic railway bridge, about 143 m long, with a new deck of steel beams integrated into concrete for ballasted track. The new deck is specified as 143.92 m long, compared with 142.80 m for the existing deck, and is intended to increase clearance below the bridge by 49 cm to 6.1 m. The existing supports are to be retained and their foundations strengthened: 12 piles are specified for the Varennes-sur-Seine C3 abutment, while other supports are to be reinforced by cement-grout injection. Separately, the opinion records a temporary river-pile discrepancy: the dossier indicated 32 piles in the major riverbed, while the latest sizing was said to require 8–12; this is distinct from the 12 piles specified at C3. Status: planned Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Ecology The Seine section, banks and some downstream woodland and agricultural areas are within the Natura 2000 site “Bassée et plaines adjacentes”; the secondary and connected work areas are included. The project is also within the ZNIEFF type II “Vallée de la Seine entre Vernou et Montereau,” except for the main work area. The connected work-area footprint, partly within a wetland, was reduced from 0.44 ha to about 0.1 ha; the opinion does not establish that 0.1 ha is the area of wetland affected. A separate 0.65 ha compensation site about 350 m away in Varennes-sur-Seine was proposed for conversion from poplar cultivation to willow and alder woodland, with reedbeds preserved and a filled area removed. An agreement with the landowner was still being negotiated, and the authority sought confirmation of 30 years of management. The dossier assessed residual effects on protected species as not significant, but the authority considered that assessment inadequate for several groups given the two-year works and called for compensation and an updated protected-species derogation dossier. Effects on the protected thick-shelled river mussel from river works could not be ruled out. The opinion also records evolving barge waiting-area arrangements: abandonment of proposed waiting-area dolphins had been indicated but needed confirmation or a complete avoidance, reduction and compensation approach; use of an existing right-bank area was under discussion. This does not establish the final waiting-area arrangement, and the proposed loading pontoon and other river works are distinct from that unresolved arrangement. Further ecological survey and follow-up information was also needed. Status: reported Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Delivery The opinion described works lasting about two years, with a planned start in January 2026, deck replacement targeted for August 2027 and completion planned for January 2028. Three work areas were planned: a main area on Haropa Port land at Varennes-sur-Seine, a secondary area on the Varennes-sur-Seine side and a connected area at La Grande Paroisse. River transport was to be prioritised, with land access also planned. Enabling works included temporary supports and pontoons, about 450 m³ of dredging near La Grande Paroisse, and demolition of disused railway structure OA1 to provide access; OA1 was not to be rebuilt. The opinion also described nine night-time rail interruptions, a full 16-day rail closure, and a three-day interruption to river traffic. These are plans reported in 2025, not confirmation that works occurred. Status: planned Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Location Across the Seine between Varennes-sur-Seine and La Grande Paroisse, in Seine-et-Marne (department 77). Status: reported Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Developer SNCF Réseau is identified as the project owner (maître d’ouvrage). Status: reported Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Investment Estimated at approximately €52 million excluding tax, including €38 million excluding tax for the bridge. The estimate's value year and the portion attributable to environmental measures were not specified in the dossier. Status: reported Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Regulatory A case-by-case decision dated 17 September 2020 required environmental assessment. The opinion reports an application for environmental authorisation under water legislation and a dossier seeking derogation from protections for protected species and their habitats. The environmental authority's opinion, adopted on 24 July 2025, assesses the impact study and environmental treatment; it is expressly neither favourable nor unfavourable and is not itself an authorisation decision. Status: reported Attribution: IGEDD environmental authority assessment and attributed developer synthesis Source: IGEDD environmental authority native opinion text — https://www.igedd.developpement-durable.gouv.fr/IMG/pdf/07_-_projet_de_remplacement_du_pont-rail_entre_varennes-sur-seine_et_la_grande-paroisse_77__cle67e913.pdf | published unknown | observed 2026-10-03T18:21:19.765296+00:00 ## Cite this dossier CapexCue — Remplacement du pont ferroviaire sur la Seine à Varennes-sur-Seine et la Grande Paroisse — dossier released 2026-10-15T18:17:34.392814+00:00, release 1 (7bdf8974-636d-4012-b8be-c957017f5276) — https://capexcue.com/projects/remplacement-du-pont-ferroviaire-sur-la-seine-a-varennes-sur-seine-et-la-grande-paroisse-10787f5609df66df/. For current information and later dossier updates, visit . This file records the release identified above; the current dossier may change.