A competitive bidding process is underway to find an alliance consultant for the future light-rail connection between the Helsinki city centre and Laajasalo in eastern Helsinki. The outcome of the process will be a call for bids to project alliance partners during 2019.
The Crown Bridges project – Kruunusillat in Finnish – will be implemented as a combination of two types of contract: the two bridges connecting Kalasatama and Kruunuvuorenranta and the construction of earth structures at Helsinki Zoo on the Korkeasaari island will constitute a lump-sum contract, and other construction work will be carried out in compliance with the alliance model.
The work that constitutes the lump-sum contract will be separate from the scope of the alliance, because the plans for the bridges of Kruunuvuorensilta and Finkensilta were drawn up in conjunction with the design competition that was held earlier.
The goal is to commence construction in 2020, likely with dredging in the Helsinki Zoo water area.
Types of contracts:
The alliance contract model is a contracting method in which the various parties, that is, the client, designers and contractors, are united as one organization at an early stage of the process to jointly design and implement the project.
A lump-sum contract is the conventional contract type. The client signs a contract with one contractor, and the contractor implements the work on the basis of the design provided by the client.
Crown Bridges connection:
The Crown Bridges connection will be a 10-kilometre tram route connecting Laajasalo, Helsinki Zoo on Korkeasaari, Kalasatama and the city centre. It will also provide a new maritime route for cyclists and pedestrians.
The most visible parts of the project are three new bridges: Kruunuvuorensilta (Kruunuvuori bridge) connecting Kruunuvuorenranta and Helsinki Zoo, Finkensilta (Finke bridge) connecting Helsinki Zoo and Kalasatama, and Merihaansilta (Merihaka bridge) connecting Nihti and Hakaniemi. Kruunuvuorensilta will be the longest bridge in Finland with its total span of 1,200 metres. The Hakaniemi bridge will also be rebuilt in conjunction with the project.
The connection is scheduled for completion in 2026.