Technical data
Project description
Construction of a noise protection tunnel between the Böblingen and Sindelfingen-Ost exits on the A81 motorway
Length: 850 metres
Two tubes, each with three lanes plus hard shoulder
Consisting of 85 individual blocks with a block length of 10.0 metres
Construction method
- Open construction method
Geology
- In the layers of the Keuper
General data
The project
Tunnel A81 near Sindelfingen
Client
DEGES GmbH
Contractor
ARGE A81 - consisting of Wayss & Freytag Ingenieurbau AG, HOCHTIEF Infrastructure GmbH, J. FRIEDRICH STORZ VERKEHRSWEGEBAU GMBH & CO. KG
Construction period
2013 to 2027
Net construction sum
Approx. € 100 million Total project
Extension of the A81 motorway
The A81 between Sindelfingen-Ost and Böblingen-Hulb is being widened from four to six lanes over a length of more than seven kilometres.
The noise protection tunnel serves as a link between the towns of Böblingen and Sindelfingen, among other things.
Further projects
Frankfurt am Main
13,000 journeys shifted from car to rail every day
Wewelsfleth
Wind energy from northern to southern Germany
Fehmarn
World's longest immersed tunnel for combined rail and road transport
