A stretch of the Francilienne N104 will be closed around the clock from Tuesday, October 20, 2026 at 10 p.m. until Friday, October 23 at 5 a.m. The closure affects the inner carriageway, between the interchanges with the A5b in Évry-Grégy-sur-Yerre and the A5a in Tigery, announced by the Île-de-France Roads Directorate, the DiRIF.
It is a 24/7 closure: motorists cannot rely on a daytime reopening of this stretch. The outbound direction, from Tigery toward Évry-Grégy-sur-Yerre, remains open, according to the information document for the construction site.
The work aims to repave the road and address a stretch that is particularly badly damaged. The DiRIF says it has rescheduled these works for the school holidays to minimize the impact on traffic.
Detour routes will be clearly signposted. Those who usually travel through the closed-off area will need to reroute for the duration of the intervention.
The announced schedules and any changes to the closure can be found on Sytadin, Île-de-France’s traffic information service. A quick check before you depart will also help you account for other incidents or roadworks along your route.
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Dates and Opening Time
From October 20, 2026 to October 23, 2026
