The Krivaja network was a 118.7km-long line along Zavidovići-Olovo-Kušace. In 1949 it became DŠŽ-ZOK (Državna Šumska Željeznica - Zavidovići-Olovo-Kušace.
Bosna C't, Krauss 1918 (1933 > JDŽ as Bosna; 1953 > JŽ as Bosna; now preserved at Rajlovac depot)
Krivaja ? B'B't, Maffei 1904 Krivaja ? B'B't, Maffei 1908 Krivaja ? B'B't, Maffei 1908 Krivaja ? B'B1't, Maffei 1907 Krivaja ? B'B't, Maffei 1907 Krivaja Han Pijesak B'B't, Maffei 1910 Krivaja ? B'B't, Maffei 1910 Krivaja Olovo B'B't, Maffei 1910 Krivaja Kušace C1't, Krauss 1901 (1919 > SHS; 1933 > JDŽ; 1953 > JŽ) Krivaja Stupčanica C1't, Krauss 1901 (1919 > SHS; 1933 > JDŽ; 1953 > JŽ) Krivaja Piccolo C't, Krauss 1901 Krivaja Krivaja C1't, Krauss 1900 Krivaja Trstionica C1't, Krauss 1900 Krivaja Dubošćica C1't, Krauss 1900 Krivaja Perfekt C't, Krauss 1901 Krivaja Vorwärts C't, Krauss 1904 Krivaja Žep C't, Krauss 1904 Krivaja Zviezda C't, Krauss 1904 1362 - 1364 E't, Linz 1925 (1949? > DŠŽ-ZOK 1362 - 1364) 1394 E't, Linz 1925 (1949? > DŠŽ-ZOK 1394) 1516 E't, Linz 1929 (1949? > DŠŽ-ZOK 1516)