Jagdberg tunnel
| Jagdberg tunnel | ||||
|---|---|---|---|---|
 Northern tube of the Jagdberg tunnel
|
||||
| use | Road tunnel | |||
| traffic connection |
 
|
|||
| place | at Jena | |||
| length | 3074 m | |||
| vehicles per day | 67000 | |||
| construction | ||||
| Client | Federal Republic of Germany | |||
| building-costs | 385 million euros | |||
| start of building | September 25, 2008 | |||
| planner | DEGES | |||
| business | ||||
| operator | (Thuringia Motorway Office) | |||
| release | October 30, 2014 November 18, 2014 |
|||
| location | ||||
|
||||
| Coordinates | ||||
| West portal | 50 ° 52 '44 " N , 11 ° 32' 12" E | |||
| East portal | 50 ° 52 ′ 18 " N , 11 ° 34 ′ 36" E | |||
Map with all coordinates: The Jagdberg tunnel is a 3.074 kilometer long tunnel on federal motorway 4 west of Jena , which passes under the Ilm-Saale-Platte , a limestone formation between the valleys of Ilm (near Weimar ) and Saale (near Jena). The building is named after the 288 meter high Jagdberg , which is located between Jena- Göschwitz and the east portal. The tunnel is one of the 10 longest road tunnels in Germany .
The excavation of the tunnel began on September 25, 2008 with a ceremonial first blast on the south tube. The southern tube was penetrated on August 27, 2009 - more than half a year ahead of schedule. The traffic opening originally planned for mid-2012 took place on October 30, 2014 for the tube going west ( to Frankfurt am Main ) and on November 18, 2014 for the tube going east ( to Dresden ). Before that, a three-month trial run was carried out for the rescue workers.
description
The structure is the core of the so-called Leutratal bypass of the federal motorway 4 between the Bucha and Jena - Göschwitz junctions . The 11.8 kilometer long six-lane route replaces the previous four-lane route through the valley, which was rich in curves and inclines. According to the federal planning company DEGES , an expansion of the old route was necessary because of the extreme gradients and the tight curve radii, but not possible for nature conservation reasons. After the bypass went into operation, the old route was dismantled and renatured by summer 2016.
The tunnel has two tubes, which are 3074 meters and 3070 meters long, each with three lanes and emergency walkways on both sides. The gradient to the west is 2.9 percent. As safety equipment, there are emergency bays every 560 meters and ten cross tunnels with fire protection gates every 280 meters. Longitudinal ventilation is provided by jet fans . In the middle of the tunnel there is a 130 meter high exhaust air shaft. Also in the middle of the tunnel is a speed monitoring system ("speed camera") in both directions. A distance measurement is carried out at both tunnel entrances . Over the length of the tunnel (and the Lobdeburg tunnel directly next to it ), gantries with variable message signs are installed at regular intervals , which indicate variable speed limits , warnings (accident, construction site, breakdown, maintenance) and lane closures.
The east portal of the tunnel is one kilometer west of the Saale , the west portal near the village of Oßmaritz . Residents of places at the west portal have tried unsuccessfully to obtain at least an extension of the tunnel to the west in order to be less affected by road noise . In March 2008, the Federal Administrative Court in Leipzig rejected such urgent applications. DEGES built eight kilometers of noise barriers to reduce the pollution of the residents.
According to forecasts, up to 67,000 vehicles will use the route section every day in the future. An increase to 80,000 vehicles is forecast in 2025 , a quarter of which will be used for heavy goods vehicles.
Cost increases
The approved construction costs of the tunnel amount to 385 million euros. In 2008, costs of 295 million euros were expected. Initially, it was planned that the transport of dangerous goods would not be allowed through the tunnel. However, planners and authorities moved away from this in the course of construction. The necessary safety precautions made the tunnel project more expensive. According to the Thuringian Ministry of Transport, the fire fighting system will cost 14 million euros extra.
Ingress of water led to the subsequent installation of barriers and drainage . The additional costs were put at four to five million euros. Completion was also delayed by a year.
The 10 km long former motorway section of the A 4 near Jena, which had become superfluous, was dismantled and renatured from 2015. This not only affects the concrete and asphalt roadways, but also 17 bridges and four parking spaces. The removal of the road surface corresponds to an amount of 14,000 loads from 20-ton trucks.
photos
East portals for tunneling in September 2008
Aerial photo, September 2008
View of the east portal and the construction site, May 2012
View of the east portal shortly before completion, August 2014
Web links
- Information from Deges on the expansion of the A4 motorway
- Pictures of the construction site on bastellen-doku.info
- Official website for the new construction of the six-lane motorway section of the A4 Eisenach-Görlitz between AS Magdala and AS Jena / Göschwitz (B88)
- Pictures of the clearance and traffic allocation in the Jagdberg tunnel (north tube)
- Video recording of an A4 drive in 2013 before the opening of the Jagdberg tunnel
- Old empty A4 motorway in the Leutratal Jena (video documentation of dismantling work)
Newspaper reports
- Ostthüringer Zeitung , July 23, 2008, page 1: Jagdberg tunnel completes the A4
- Thüringer Allgemeine , July 23, 2008, page 6: The eye of the Leutratal needle disappears
- Thüringer Allgemeine, September 26, 2008, page 6: The widest tunnel in Thuringia
- Thüringische Landeszeitung , August 6, 2014, page 3: State secret about the Jagdberg tunnel. Nobody gives a date for the opening of the new section of the motorway - the tunnel festival on 23 August. Full-page report by Sibylle Göbel
Individual evidence
- ↑ a b dpa: Jagdberg tunnel opened on A4 near Jena: traffic rolls through the tube towards the west. Thüringer Allgemeine, October 30, 2014, accessed October 30, 2014 .
- ↑ a b c Jagdberg tunnel will open at the end of October (accessed on August 22, 2014)
- ↑ Tino Zippel: Trial operation for the Jagdberg tunnel near Jena is to start in June 2014: speed cameras planned. Ostthüringer Zeitung, August 14, 2013, accessed on October 30, 2014 .
- ↑ BVerwG, decision of March 13, 2008 ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , Az. 9 9/07 and 9 VR 10/07, full text and comments on naturschutzrecht.eu .
- ↑ a b c Tino Zippel: Delay in construction and millions in additional costs for the Jagdberg tunnel for A4. Ostthüringer Zeitung, April 27, 2012, accessed on October 30, 2014 .
- ↑ Andreas Hummel: Torture on the mountain ends with the Jagdberg tunnel. October 29, 2014, accessed October 30, 2014 .
- ↑ Tino Zippel: Jagdberg tunnel is getting even more expensive. Ostthüringer Zeitung, January 10, 2012, accessed October 30, 2014 .
- ↑ Martin Burger, environmental officer at the federal highway construction company Deges. According to VDI nachrichten, November 6, 2015
