After the end of the Second World War, the state railway was in no position to modernise the line, which continued to soldier on using steam, and diesel locos which were stabled in the shed at Gresten, and inside the roundhouse at Ober Grafendorf - the only such example of a narrow gauge roundhouse in Austria.

The sparse passenger train services between Wieselberg and Gresten were withdrawn from 1 January 1991, although special passenger trains continued to run until the line was reconstructed.

The track became increasingly decrepit, and eventually ÖBB decided that the section between Ruprechtshofen and Wieselberg an der Erlauf had become too dangerous to continue to use, and all services were suspended from January 2000. Freight has already been withdrawn between Ober Grafendorf and Wieselberg from 31 December 1998.

The left hand picture shows the closed section, the centre the station building, and the right the view back towards kILB, still in service (2005).

The closed section retained its tracks (at least until autumn 2005, and although heavily overgrown in places was still recognisable as a railway. Lehenleiten
Ruprechtshofen Granenegg-Rainberg

Click for more pictures of five closed stations

However the section between Wieselberg and Gresten still carries a large amount of freight traffic, mainly sawn timber and limestone. Standard gauge wagons were carried on narrow gauge röllbocke, and the trans-shipment at Wieselberg had long been a problem, being costly in manpower and time. The line was therefore reconstructed during 1998, reopening as a single-track standard gauge branch with passing loops.

This regauging effectively cleared all traces f the old track from the valley up to Gresten, including most of the stations. Howevere at Steinkirchen am Forst, the station buildings remain served by a twin track passing loop. At Wang, a single siding serves a freight facilitiry mainly devoted to building and agricultural items, and at Gresten itself, the station yard still contains a trackless depot, and three active tracks. There are two industrial complexes served by rail, one near Randeck the other on the dge of Gresten. A visit in summer 2005 saw a ten wagon freight with twin 2070 haulage in the Gresten station yard.

The name Krumpe is a word approximately meaning the bent one in the local dialect.

The section between Ruprechtshofen and Mank was reprieved when services on the line to Wieselberg were suspended, but on 14 December 2002 the services were replaced by buses, and the rail service suspended, again because of the state of the track.

In 2003 ÖBB put forward proposals to convert the section of the Mariazellerbahn between Sankt Pölten and Kirchberg an der Pielach to standard gauge. This would isolate the narrow gauge Ober Grafendorf - Mank section of the Krumpe, which ÖBB did not propose to modify. The plan does not have the backing (at 2005) of the local councils, who would be asked to foot much of the bill for the rebuilding.