Black Forest Railway (Württemberg)

The Black Forest Railway - called to distinguish it from the same Baden Württemberg Black Forest railway route also - is a railway line from Stuttgart to Calw, which was opened in 1872.

The section Stuttgart- Because the city was electrified in the 1930s and since 1978 has been part of the Stuttgart S- Bahn network. The remaining portion of Weil der Stadt Calw, however, lost its importance and was taken in the 1980s out of service.

• 2.1 reactivation efforts Weil der Stadt Calw

History

1865-1872: Design and construction

The decision to build the Württemberg Black Forest Railway from Stuttgart Leonberg and Weil der Stadt to Calw was made in 1865 in the Württemberg state parliament. Planning and construction of the line were led by Carl Julius Abel. The Black Forest Railway was built as the main track and traced out, ie with as few bends, generous radii and a few crossings. Both tunnel and bridge heads of all bridges - - In addition, the civil engineering of the route had been designed for the two-track operation. The subgrade was, however, a single track, down to the section Althengstett - Calw, which was created two tracks, so that the operation in spite of the 10.5 km long ramp Calw - Althengstett could run smoothly. This strongly inclined section was the first two tracks created from the beginning section of the course in Württemberg.

The section of line from Zuffenhausen to Ditzingen completed in 1868, a year later, the section was completed to Weil der Stadt. The last and most complex part of the route between Weil der Stadt Calw and was not completed until 1872. A close loop with a radius of 335 meters was located at around the Schafhausen Hackenberg built. This terminal loop principle was applied in Hirsau again. Here it was necessary because of the large difference in height between Calw and Althengstett to bring about an artificial length development. Why was the Tälesbachtal, a tributary of the Nagoldtal, extended into a loop and then the line was again by the Hirsauer tunnel, which can be regarded as a small part of a twisting tunnels, returned to the slope of the Nagoldtal. This means that a train that travels from Calw direction Althengstett, is first on the eastern Nagoldtalhang in a northerly direction, and then just a lot higher to go to the loop in parallel on the same slope, in the opposite direction south. Model for this type of track alignment was the Brenner railway in Austria.

In addition to the tunnel Hirsauer it kept the planners due to the topographical conditions necessary to create two more tunnels in this final phase of construction, of which only one, of the approximately 700 -meter-long forest tunnels, were built. The other, which was originally to be built between Althengstett and Calw, could not be established due to geological problems. Instead, you put a 1150 meters long and up to 38 meters deep incision, the so-called field - hut incision on.

Right on the end of the route in Calw the depot Calw was also completed in 1872.

Since 1932: division and divergence

Stuttgart Weil der Stadt: Construction and S-Bahn operation

From Stuttgart to Renningen the second track was laid in 1932 to 1939. The section of Stuttgart -Zuffenhausen to Leonberg was electrified until 15 May 1939 and the section from Leonberg to Weil der Stadt until 18 December 1939. In the electrical section, the E 44 series and after the Second World War, the E 52 series were used.

Since 1978, the portion Stuttgart Weil der Stadt is integrated into the network of S -Bahn Stuttgart; on the section to Calw wrong initially continue DMUs as a feeder to the S -Bahn. During the recording of the S -Bahn operation over a kilometer long Überwerfungsbauwerk was built with a raised platform and 30 per thousand steep ramps in Zuffenhausen station for the track according to Weil der Stadt.

On 3 December 1988, the built for just under five million D- Mark S - Bahn stop Weilimdorf was put into operation. In October 2003, a second track was put into operation between the race rings and Malmsheim. This allowed the S-Bahn a roadmap with longer travel times, but greater stability, with the scheduled train crossings of Weil moved to the city after Malmsheim. The longer journey time refers stays in Renningen with a resulting, when trains are the S -Bahn line S60 strengthened or weakened in there Renningen.

Station Korntal

A freight train passes through the breakpoint Weilimdorf

S -Bahn Because of the city shortly after the breakpoint Stuttgart -Weilimdorf

Station Renningen

Weil der Stadt Calw: Stagnation and decommissioning

After the electrification of the section Stuttgart Weil der Stadt came on the remaining section between Weil der Stadt Calw and initially steam locomotives used. Since 1953 also diesel-powered rail cars of the DB Class VT 98 were run, which then took over a few years later all services on the route. The second track between Calw and Althengstett 1963 was dismantled.

1983, passenger services were set. The decommissioning process for freight services on the section was introduced on 16 July 1986. The traffic volume was then estimated at 220 cars per year, the investment required with around one million DM 1988 set the freight after a landslide on forest tunnel at Althengstett. The track facilities fell into disrepair, and the line was formally closed down with effect from 1 September 1995. The plants of this section are listed buildings and are still dedicated as railroad track.

The efforts of the company founded in December 1987 Association for the Preservation of the Württemberg Black Forest Railway (WSB, since 2009 Club Württemberg Black Forest Railway Calw - Weil der Stadt ) led in 1994 to the purchase of the section by the district Calw. Since the German Bahn AG wanted to make the route legally, it was abandoned on 31 August 1995, public transport and appears in the list of disused tracks of the Federal Railway Authority. With the same effect (1 September 1995), however, given the state of Baden -Württemberg the Calw at his request, the license for a non-public railway siding for 20 years ( decision of the Ministry of Transport in Stuttgart of 22 August 1995). Therefore, the rail can be as such formally resumed immediately once the system is ready for.

The field hut incision between Althengstett and Calw

Routing above Calw

End of the Black Forest Railway at the old train station Calw

Old station building in Calw

Planning

Reactivation efforts Weil der Stadt Calw

Since 1994, the purchase path Calw began to reactivate the movement of persons and found support from the district of Böblingen. Various reports on behalf of the district Calw (feasibility study, cost-benefit analysis, cost accounting sequence ) were positive. In 2008, the districts of Calw and Böblingen adopted resolutions regarding further plans to reactivate the route Calw -Weil taken the city, with the former goal of commissioning in 2015.

A new cost-benefit analysis, at the time an alternative to a diesel or light rail variant, the possible expansion of the Stuttgart S-Bahn has been reviewed by Weil der Stadt on a disused stretch to Calw revealed for the extension of the S-Bahn system 2.01 even by far the highest benefit -cost ratio, followed by the variant of isolated operation with light rail with 1.45 and the diesel-powered train by a factor of 1.22. Therefore, the following particular variant of a S-Bahn extension was followed

However, a recent study in May 2011 showed, surprisingly, a lack of profitability of the project. The project proponent doubt these numbers to however.

In June 2012, the district of Calw then took the decision that now but will be built just a feeder service to the S -Bahn, which is to be operated from Calw about Weil der Stadt up to Renningen under the name Hermann -Hesse -Bahn. According to a press report, the first threshold, a positive cost -benefit ratio was achieved in re- examinations. The investment would be in the euro about 50 million. The district Calw hopes to promote the country level with a feed rate of up to 75%. An approach will be developed as the county can pay its own share of at least 10 million euros. The plan is an operation in which is to be run in a half-hourly clocking at least to 20 clock.

The Hermann -Hesse- web is to go from Calw to Renningen, with the breakpoints ZOB Calw, Calw - Heumaden Althengstett, Ostelsheim, Weil der Stadt and Renningen. With the drive to Renningen not only a direct connection to the S6 towards Stuttgart should be possible, but also a connection to the S60 to Böblingen. So far, the district of Calw, however, has not yet produced concrete figures for cost -benefit analysis. An extension to an S -Bahn route would cause about 50 % more costs than with this concept, here is the benefit -cost ratio would be below the eligibility limit of 1.0. The inclusion in the tariff structure of VVS is planned, but the idea is a separate ticket. However, the ticket will be valid also for the Stuttgart S -Bahn network.

After completion of the Standardized Assessment of Calw district council gave in October 2013, the agent for the tender of the required planning services in the amount of an estimated 2.4 million euros free. By the end of 2014, the acquisition of the formal construction law is sought, with completion expected by no later than 2019.

For the S -Bahn to the construction of two double-track sections is provided so that trains can meet on the otherwise future single track section. In Schafhausen the route should result in a new tunnel through the Hackenberg, to save having to use the local loop, thereby reducing the driving time. The construction of such a tunnel would, however, make a steep ramp with a slope of 40 ‰ in the area of the tunnel inevitable, due to the only high-performance features such as S-trains could travel the reactivated part of the route. For freight trains the reactivated section would then not be available, which would reduce the efficiency of the route and would prevent a potential time savings for freight.

Trivia

• Hermann Hesse takes in several of his works relating to the Black Forest Railway, and its stunning embankments in Calw. The dam in a loop at Hirsau was with a height of 64 meters, the then highest embankment Europe.
• Calw offers from the left side of the Nagoldtal a three -panel view: one sees the track once the Nagoldtalsperre Valley Railway, about twice the track of the Black Forest Railway.
• Before the city of Stuttgart was a city sewer system, the faeces were distributed by tank cars on the Black Forest Railway to the farmers along the route as fertilizer.
• During the Second World War existed from Renningen station a connecting track to the military airfield Malmsheim. The track is still in the area east of the Renninger northern edge of road and in front of the airport buildings.