Project promoter Femern has closed the prequalification process for the €5.5bn (£4.6bn) Fehmarnbelt project after receiving bids from 24 different companies.
The 19km tunnel between Rødbyhavn on the Danish coast and Fehmarn in Germany will include a four-lane motorway and double track electrified rail line to connect Malmö in Sweden and Copenhagen in Denmark with Hamburg and Berlin in Germany.
Companies from across the world formed nine different joint ventures to apply for prequalification on the projects four main contracts.
The four civil engineering contracts for the project are the dredging of the seabed and land reclamation worth around £334M; construction of the portals, ramps and land works worth around £502M; and constructing the north and south section of the tunnels worth about £1bn each.
The prequalification process closed on 18 January and Femern will now evaluate applications and invite companies to bid.