Rail Baltica joint venture (JV) RB Rail is set to commence the second stage of design procurement for a 56km-long section of the mainline.
The tender involves selecting a contractor to develop a master design, value engineering studies, spatial planning solutions and detailed technical design over two years.
Comprising five municipalities, the section passes through one of the most densely populated urban areas. It also features the only tunnel on the Rail Baltica route.
The section will also provide connectivity between the Rail Baltica International Passenger Stations in Riga Central Station and Riga International Airport.
Preliminary plans estimate that the work will include designing 12 road viaducts, 16 rail viaducts, 13 segregated pedestrian crossings and five bridges.
It also includes designing the second part of the railway overpass in Riga Airport and the tunnel.
RB Rail acting CEO Ignas Degutis said: “The selected designer will play the key role in defining technical solutions in cooperation with a wide range of stakeholders, while also providing solutions to address the expectations of the surrounding communities such as visual integration of the railway in the landscape, as well as tackling noise pollution.”
Six applicants who were shortlisted by RB Rail earlier this year will be able to submit their proposals. The deadline for proposal submissions is 22 January.
The Rail Baltica line will connect the Baltic states of Estonia, Latvia and Lithuania to European rail network and is divided into 11 sections.
Procurement is currently underway for six of these 11 sections, with a detailed technical design for the entire line expected by the end of 2021.