Flat Wagons
The CFBS has 7 flat wagons used for service and work trains.

H 5201: Built by Baume & Marpent, 1922. Ex-P.Frot company
Hf 9501:Builder unknown. Ex- Chemin de fer Yverdon St. Croix (Switzerland)
Hf 9502: Builder unknown. Ex- Chemin de fer Yverdon St. Croix (Switzerland)
Hf 9503: Builder unknown. Ex- Chemin de fer Yverdon St. Croix (Switzerland)
Hf 9504: Builder unknown. Ex- Chemin de fer Yverdon St. Croix (Switzerland).
Hf 9505: Builder unknown. Ex- Chemin de fer Yverdon St. Croix (Switzerland)
MMX 3: built in Germany 1915. Ex- CF Ardennes
Special Wagons 
The CFBS owns various preserved special service or historic wagons.
T 9301 and T9302: Built by Decauville ca. 1910 ex-CP (Portugal) Flat wagons for carrying rails
T 9009: Builder unknown. Ex- Meurthe et Moselle. Flat wagons for carrying rails
T 9209: Builder unknown. Ex-Meurthe & Moselle/Ardennes. Wagon fitted with double buffer system. Undergoing restoration
T 9220: Builder unknown. Ex- Meurthe et Moselle. Flat with low sides. Loaded with barrels
T9401 to 9403: well-wagons used for carrying public works equipment. Ex-TSO
SE N°5: Ex-S.E. Somme. 5-ton Crane wagon, 1890

Hopper Wagon
Ff 98001: This ballast hopper wagon, weighing 44 metric tons when fully loaded, was built in 1956 and was originally on a 76cm gauge mining railway in former East Germany.
In the 2000s, it was transferred to the Swiss DFB (Dampfbahn Furka-Bergstrecke) heritage railway and fitted with French-built metre gauge bogies originally from the Yunnan line in Vietnam.
After having been adapted, it is used by the CFBS for carrying ballast during trackwork. During the 2017-2018 winter, it carried 7,300 tons of ballast when the 6.5km long line from Noyelles to Le Crotoy was rebuilt.