Höllentalbahn (Black Forest)

The Höllentalbahn (literally, "Hell Valley Railway") is a railway line that partially runs through the Höllental valley in the Black Forest of Germany. The line connects Freiburg im Breisgau with Donaueschingen, a distance of 74.7 km (46.4 mi).

Höllentalbahn
Hell Valley Railway
Overview
OwnerDeutsche Bahn
Line number4300
Termini
Service
Route number727
History
Opened21 May 1887
Technical
Line length74.7 km (46.4 mi)
Number of trackssingle track
Rack system1887 until 1933; now adhesion
Track gauge1,435 mm (4 ft 8+12 in)
Electrification1936 until 1960:

20 kV 50 Hz AC

since 1960:

15 kV 16.7 Hz AC
Operating speed100 km/h
Highest elevation607 m (1,991 ft)
Maximum incline5.5%
Route map

Km
Height
Rhine Valley Railway from Mannheim
−2.0
Freiburg (Breisgau) Hbf.
278 m
0
Branch point
(replaced by a new route in 1934)
Rhine Valley Railway to Basel
Loretto Tunnel
514 m
Sternwald Tunnel
302 m
2.7
Freiburg Wiehre
280 m
5.7
Freiburg Littenweiler
317 m
7.4
Kappelertal
now closed
11.0
Kirchzarten
392 m
13.9
Himmelreich
455 m
Falkenstein Tunnel
72 m
Lower Hirschsprung Tunnel
121 m
Upper Hirschsprung Tunnel
69 m
18.2
Hirschsprung
now closed
559 m
Kehre Tunnel
203 m
20.6
Posthalde
now closed
657 m
22.2
Höllsteig
now closed
740 m
Ravenna Bridge
224 m
Ravenna Tunnel
47 m
Finsterrank Tunnel
248 m
Löffel Valley Tunnel
82 m
25.4
Hinterzarten
885 m
29.3
Titisee
858 m
Dreiseenbahn to Seebrugg
32.3
Hölzlebruck
now closed
29.3
Neustadt (Schwarzwald)
805 m
39.1
Kappel Gutachbrücke
now closed
Branch line to Bonndorf
Gutach Valley Bridge
Finsterbühl Tunnel
166 m
Hörnle Tunnel
220 m
Setze Tunnel
104 m
Kapf Tunnel
203 m
45.9
Rötenbach
50.9
Löffingen
804 m
53.2
Reiselfingen
now closed
56.3
Bachheim
58.7
Unadingen
Döggingen Tunnel
535 m
64.0
Döggingen
67.7
Hausen vor Wald
now closed
Breg Valley Railway to Bräunlingen
Hüfingen Mitte
72.1
Hüfingen
now closed
Donaueschingen Allmendshofen
Black Forest Railway from Konstanz
74.7
Donaueschingen
677 m
Black Forest Railway to Offenburg
Source: German railway atlas

Over its entire course the line rises from an altitude of 278 m (912 ft) in Freiburg to 885 m (2,904 ft) in Hinterzarten. Part of the route has a 5.5% gradient, making the line one of the steepest in Germany.

The section Freiburg-Neustadt is electrified since 18 June 1936. Because of this and the steady decrease of traffic between Neustadt and Donaueschingen the route did not represent an operational unit anymore. The last direct connection between Freiburg and Donaueschingen ended in 2003 with the Kleber-Express Freiburg-Munich being discontinued. The missing section was electrified until the end of 2019 in the course of the project “Breisgau-S-Bahn 2020”, in order to enable direct trains from Breisach via Freiburg, Neustand and Donaueschingen to Villingen.

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