Nantenbach Curve
The Nantenbach Curve is the name of a connecting curve between the Main-Spessart Railway and the Hanover–Würzburg high-speed line. Coming from Aschaffenburg the line branches off towards Würzburg, about northeast of Lohr, in the cadastral district of Nantenbach, in the community of Neuendorf. From the Main-Spessart line, the railway turns in a wide curve to the southeast to a junction at the Rohrbach operating station on the Hanover–Würzburg line.
Route
The route is long with continuous double track, electrified, equipped with the German Linienzugbeeinflussung train protection system, and running on many engineering structures: the viaduct over the Main, followed by the and another three tunnels. About 60 percent of the curve – – is four tunnels with lengths between. The track rises from the Nantenbach junction at above sea level to Rohrbach operating station at above sea level on a consistent grade of 1.25%. The minimum curve radius of allows a speed of. A total of of the line is on bridges. The track is located for its full length in the Main-Spessart Nature Park. The line is largely slab track on an asphalt base.The curve is used by about 60 freight and passenger trains each day.