Technical specifications

Scope of works:

• 1 two-lane road tunnel and 1 bridge
• total tunnel length 100 m 
• length of the total section to be built by us under the contract: approx. 520 m

Construction method

• Cut and cover method 
• Crossing of the A 3 motorway in 10 construction phases without interrupting the traffic flow
• Crossing of an existing tunnel on the Cologne-Frankfurt high-speed railway line

Geology

• alternating sequences of sand and gravel