This development project at a major traffic hub in Vilnius presented radical challenges — with construction work to be executed in proximity to the city centre, in a densely built-up area near residential and office buildings and in a traffic-intensive environment, with the real technological challenges only being revealed as the work progressed. The objective was to connect the arterial Geležinio Vilko Street with the fast-growing office district formed around Goštauto Street.

The project included the construction of a 177-metre-long flyover, a 460-metre-long connecting road from Geležinio Vilko Street and a 90-metre-long access road from Goštauto Street. To reorganise traffic during the construction period, some of the adjacent streets had to be rebuilt during the project. Sewerage and other utility networks also required reconstruction work running over 16 kilometres. Existing maps of the district did not accurately pinpoint the precise location of the underground networks, so dynamic probing was used during the construction of the pile foundations.

The construction of the access road from Geležinio Vilko Street also required modifying the terrain of the neighbourhood, including the excavation of part of the hill and the construction of a 460-metre-long variable height retaining wall required as protection against possible landslides. On the other side, the flyover had to connect to the busy Goštauto Street, where the movement of construction equipment was severely restricted by the parked private cars, heavy traffic and dense housing.
During the reconstruction of the engineering networks, it became apparent that the historic brick sewage collector was at a different elevation to that shown on the plans. This meant that the intended solution to replace it with modern pipes could not be implemented. In addition, the traditional approach to this type of work, which involves a large construction pit, was not possible due to the close proximity of the surrounding buildings to the site. The search for an innovative solution and discussions with the client resulted in the use of cutting-edge technology from the Danish company Aarsleff which allowed the existing pipes to be reinforced with a special plastic liner.