history
The federal highway B 312 is an important regional development axis between the main centers of Stuttgart - Reutlingen - the Swabian Alb and Upper Swabia dar. on to the broken line is a major Albaufstieg. This axis is already a historical basis.
out in Reutlingen, the B 312 through the city. A traffic load up to 65,000 vehicles per 24 hours and an enormous burden of noise and pollutants can be reported here. The first consideration for a bypass of Reutlingen go to the mid-1960s back. The objective of the planning was to improve the traffic situation and of course the discharge through the village of Reutlingen of heavy through traffic. In particular, the relief of the main thoroughfare, Karl Road " und der Reutlinger Oststadt vom immer größer werdenden Schleichverkehr war das Ziel der Verkehrsplaner.
In enger Abstimmung und im Auftrag der Straßenbauverwaltung Baden-Württemberg hat die Stadt Reutlingen in den Jahren 1993 bis 1997 ein Bebauungsplanverfahren für die “Umgehungsstraße Scheibengipfeltunnel“ durchgeführt. Das Baurecht für dieses vordringliche Bundesstraßenprojekt wurde zunächst über einen Bebauungsplan der Städte Reutlingen und Eningen geschaffen. Die Gemeinderatsgremien beider Kommunen haben am 17. Juni 1997 den Bebauungsplan mit überwältigender Mehrheit als Satzung beschlossen. Nachdem dieser im Normenkontrollverfahren beim VGH überprüft wurde erlangte the development plan "bypass disk Summit on 22 May 2000 final legal force.
By changing the tunnel Directive (RABT) and the associated increase in demands on tunnel safety was subsequently (in addition to the actual road tunnel) an escape or rescue tunnel scheduled. On this occasion, the ventilation design was optimized and modified. Due to changes in the security policy for the tunnel began in December 2006 initiated a supplementary plan approval process, which was the zoning decisions of 30.06.2008 and 09.12.2008 to be completed. In February 2009, the measure in the economic stimulus package the federal government recorded and started in August 2009 with the construction of the measure.
road
The bypass Reutlingen as part of the B 312 travels around the core city of Reutlingen in the East - it is in the south, near the South Station, to the existing B312-pass connected Pfullingen and in the north at the so-called Efeuknoten height associated freely with the existing federal highway B 28 / B 312 Reutlingen, Metzingen. The ring road brings a significant reduction (3 km instead of 5 km) of the future 312-B streets. Along the heavily loaded road through it is after start of the disk summit tunnel to a substantial reduction of noise and air pollutants come from and avoid the congestion-plagued road users in the future, the passage of more than 20 traffic signals.
The new bypass is 3.1 km long. The projected traffic volume in 2020 is approximately 20,000 vehicles per day. Today's heavy vehicle share is about 8 percent.
The road cross section for the new road is a special section SQ 11.0 with 8.0 m paved roads and gravel on both sides banquets.
is the smallest radius of the main route R = 450 m (south) and then goes into the on-ramps to the south. The largest Slope is in the range of undercutting the existing B 312 at 5%. It is then reduced to around 3% before the south entrance and go in 0.8% slope on inside the tunnel. The majority of the new bypass is performed with 2.5% slope. The course will be developed as class I.. The construction of the road meets the RStO 2001, line 3 and has a total thickness of 70 cm.
Source: Unit 47.1 / Government of Tübingen / Reutlingen B312 ring road - disc Summit Tunnel
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