Tunnel Jagdberg

Client

DEGES
(Deutsche Einheit Fernstraßenplanungs- und Bau GmbH)

Contractor

BeMo Tunnelling GmbH (BeMo)
(formerly: Beton- und Monierbau)
commercial sponsor in joint venture
50% in Tunnel JV “A4” (BeMo - Baresel)
30.54% in JV “Tunnel Jagdberg” (Baresel – BeMo - Kirchhoff)

Project location

A4 Eisenach – Görlitz, AS Magdala – AS Jena-Göschwitz
Jena, Germany

Start of construction

2008

End of construction

2014

Project total value

127 million €

Geology

Sandstone (lower triassic, “Röt”, “Buntsandstein”), lacustrine limestone (“Muschelkalk”)

Technical Data

• Triple-lane motorway tunnel, 2 tubes
• Total length of tunnel: 20,157.48 ft (6,144 m)
o Cross-section: 1345.49 - 1668.41 SF (125 - 155 m²)
• Total length north tube: 10,085.30 ft (3,074 m)
o Mined section: 9,980.32 ft (3,042 m)
o Cut&Cover west/east portal: 32.81/72.18 ft (10/22 m)
• Total length south tube: 10,072.18 ft (3,070 m)
o Mined section: 9,612.86 ft (2,930 m)
o Cut&Cover west/east portal: 32.81/427 ft (10/130 m)
• 10 Crosspassages (each): 49.21 - 82.02 ft (15 – 25 m)
o Cross-section: 270-484 SF (25-45 m²)
• 10 Lay-by enlargements length each: 164.04 ft (50 m)
o Cross-section: 1733 - 2163.55 SF (161 - 201 m²)
• Excavation by drill and blast and NATM excavator
• Execution by NATM
• Ventilation-shaft and -gallery (smoke extraction):
o Shaft depth: 459.32 ft (140 m)
o Shaft Ø: 21.98 ft / 379.97 SF (6.70 m / 35.3 m²)
o Pilot shaft (raiseboring) Ø: 4.9 ft (1.5 m)
o Shaft sinking Ø: 26.3 ft / 541.4 SF (8 m / 50.3 m²)