 Freight traffic started on the part-opened line in 1864, and in 1866, the full of the Köping-Uttersberg Railway was officially Opened.In 1880 a new line, the Uttersberg-Riddarhyttan Railway was built by another company, but to the same gauge.This was purchased by the Köping-Uttersberg Company in 1911, and the combined railway became the Köping–Uttersberg–Riddarhyttan Railway.