The project of construction of the Koszalina and Sianowa bypasses along the S6 and S11 roads is located in the north-western part of Poland and runs through the area of the Zachodniopomorskie Voivodeship. The main part of the project is the construction of sections of expressways S6 and S11 on the section of the Koszalin and Sianowa bypass with a total length of 20.122 km, which is entirely located in a comprehensive TEN-T network. The section of the S6 express road is part of the international road E28 Berlin – Kołbaskowo – Szczecin-Goleniów – Koszalin – Gdańsk – Kaliningrad – Minsk. The above range will be complemented by a 0.742 km long transitional section. On the section of the S6 and S11 expressways a two-way road section with two lanes in each direction and an emergency lane and a wide dividing lane is provided (excluding the transitional section)