The subject of the project is phase III of the project concerning the modernisation of the voivodship road network no. 637 and 631 (the route of Marsa – Żołnierska streets), to the section from ul. Naddnieprzańska (the district of the Mars junction with the Siekierkowska Route) to the administrative border of the city of Warsaw, to the parameters of the main road of accelerated traffic (GP). As part of Stage III, it is planned to expand the intersection of Marsa and Żołnierska Streets in Warsaw through the construction of a bridge facility (estakady) along the streets Żołnierska – Marsa (in the direction of driving to the city centre) along with the reconstruction of the existing road system and the network of armaments of the terrain. The scope of the works covered by this investment includes: — demolition of part of the surface of the inlet from Żołnierska street (left road), – demolition of part of the surface of Marsa street (left road), – construction of a bridge facility connecting st. Marsa from ul. Soldier, – implementation of the integration of the designed estacada with the existing road system of Marsa street (Stage II), – implementation of the integration of the designed estacada with the planned road system ul. Soldier, – reconstruction of the intersection of Marsa street with soldier street in the area of the inlet of Żołnierska Street, – reconstruction of the intersection of Marsa street with Chełmżyńska street.