This line was a connection between the works of Terres-Rouges (south west of Esch-sur-Alzette) and the works of Esch-Schifflange (east of Esch-sur-Alzette). It ran from Terres-Rouges via a tunnel under the CFL line between Esch-sur-Alzette and Audun-le-Tiche, then another tunnel of 125 m under the hill, then further alongside the railway station (at the southern side), and then via a large viaduct (demolished in 2017) over the tracks of CFL to the Esch-Schifflange works. It was electrified with 600 V direct current.
The line was closed in 1972 when the factories of Terre Rouge were closed.
| Length | : | 2,3 km |
| Opened | : | 24-4-1927 |
| Track width | : | 1435 mm |
| Electrified | : | Yes |
| Voltage | : | 600 V = |
| Closed | : | 1972 |