The IG WTB e.V. interest group is responsible for maintaining operative the technically and historically interesting heritage railway "Wutachtalbahn". Numerous engineering structures with high museum and historical value worth being preserved can be found along the way. According to its statute, this interest group is in charge of repair work or services that the owner or tenant of the railway demonstrably is not able to render. The interest group is financed by membership fees, donations and the sale of its own brochure "Die Museumsbahn im Wutachtal". The sales revenue is the financial scope for complying with the statutory goals.