Object and specialist design services for Kiesberg Tunnel

Summary

The tender concerns the comprehensive replacement construction of Kiesberg Tunnel on state road L 70 in North Rhine-Westphalia. The project is technically demanding because the tunnel is a two-storey structure, the existing facility is ageing, and concrete damage together with outdated operating technology requires extensive planning. The project also includes a replacement structure for the obsolete overpass carrying L 70 over Viehhofstraße. The project will be delivered using an integrated project delivery model, requiring cooperation between the contracting authority and key partners for both design and construction execution.