You may avail yourself of the following itinerary. The route plan is also available for download as PDF file.

From the Cologne/Koblenz direction
Take the motorway A61, south direction, leave at exit no. 51 (Bad Kreuznach, Langenlonsheim, Gensingen), then continue on road B41 in the Bad Kreuznach direction 

From the Speyer/Ludwigshafen direction
Motorway A61, north direction, leave at exit no. 51 (Bad Kreuznach, Langenlonsheim, Gensingen), then continue on road B41 in the Bad Kreuznach direction.

From the Mainz/Frankfurt direction 
Follow the motorway A60 until it ends; at motorway triangle "Nahetal" change to motorway A61 in the Ludwigshafen/Speyer direction. Take exit no. 51 (Bad Kreuznach, Langenlonsheim, Gensingen), from there continue on road B41 in the Bad Kreuznach direction.

Then - identical for all departure directions - proceed as follows on road B41:

After the bridge leading over the river Nahe, leave road B41 at exit "Bad Kreuznach-Nord/Messegelände/B48".

In the two roundabouts, follow the signposts "Bad Kreuznach-Nord/Messegelände/B48".

Continue downhill on road B48; after approx. 600 m turn left (after passing the first house on the left-hand side).

Pass the level crossing - and enter the premises of "Rotlay-Mühle".

Route planner Download PDF