B 38 OU Mörlenbach, construction of the Kisselhöhe tunnel
- approx. 200,000 m³ of excavated material / tunnel excavation, rescue tunnels and preliminary cuts
- Construction of the tunnel lining and two portal structures
- Construction of the retaining walls and the operations building (structural work)
- including the construction of a fire-fighting water reservoir and a contaminant retention basin
- Approx. 4,300 m² of road surface
- Joint venture with HOCHTIEF Infrastructure GmbH