The project includes the construction of a road (bypass of the city of Grodzisk Mazowiecki) following a new trace, along the provincial road no. 579, the connection to the motorway junction A2/DW579 “Grodzisk” (km 2 + 209.60) to the intersection with the provincial road no. 579 (in km 41 + 427.49) wm. Kałęczyn (km 9 + 560,51). The route is located in the middle-western part of the Mazowieckie Voivodeship, in Grodzisk Mazowiecki County, on the west side of the town of Grodzisk Mazowiecki: villages: Oily, Natolin, Big Chrzanów, Bread; GrodziskMazowiecki villages of Wólka Grodziska, Kozery, Kozerki and Kałęczyn. The planned bypass passes through agricultural land development, on the outskirts of Grodzisk Mazowiecki. At the beginning of the section, it crosses the area after the closed excavations of the brickworks – “alumina”. The area intended for the plannedproject is mostly unbuilt. Only in the area of intersections with local roads will pass through built-up areas: residential and service areas. The investment area is located on a flat ground. It is a plain leaning not towards the Vistula, but towards Bzura, rising slightly toward the east. The ordinate altitude ranges from 95 m above sea level in the north to 110-112 m in the final part of the planned route (in the Kałęczyna region). The area of the planned ring road is drained by the river Mrowna with its numerous tributaries and watercourses and drainage ditches. The area adjacent to the road is agricultural. Within the intersections are located single-family or farm buildings.