| Bridge Name: | Sidi Rached Viaduct |
| Native Name: | جسر سيدي راشد |
| Other Name: | Sidi Rached Bridge |
| Crosses: | Gorge valley of the river Rhummel |
| Locale: | Constantine, Algeria[1] |
| Maint: | Direction Des Travaux Publics de la wilaya de Constantine |
| Designer: | Aubin Eyraud, Engineer; Paul Séjourné, Architect |
| Design: | Multiple-span Arch bridge viaduct bridge |
| Material: | Concrete, steel |
| Length: | 450m (1,480feet) |
| Width: | 12m (39feet) |
| Height: | 107m (351feet) (max pylon above ground) |
| Mainspan: | 68m (223feet) |
| Pierswater: | 102.5m (336.3feet) |
| Below: | 102.5m (336.3feet) |
| Toll: | Free |
The Sidi Rached Viaduct (Arabic: جسر سيدي راشد), The Sidi Rached bridge is a road viaduct that crosses the Rhummel gorges and connects the Coudiat district (city center) to Constantine Train station. It was built in Constantine in French Algeria, between 1908 and 1912, by the engineer Aubin Eyraud, with the help of Paul Séjourné who designed the hangers and finished the construction. It was the tallest Concrete bridge in the world when it was built until .
Its length is 447 meters with 27 arches including one of 70 meters, the highest culminating at 107 meters. This was Aubin Eyraud's last work of art before he entered Oxford University as a professor. It was initiated by the then mayor Émile Morinaud, in the administrative framework of the department of Constantine at the time. It was inaugurated in 1912.[1]