The contract implemented by Strabag is a “design and build” type contract. Its first stage (designing section D of the A2 Stryków-Konotopa motorway) began on October 5, 2009, and was the work of 40 engineers. The next stage of work, this time construction, began on August 12, 2010.
Currently, earthworks are being completed on the main route of section D, and key structural layers are being laid (frost protection, cement-stabilized soil, crushed aggregate, bituminous base, and binder course). The relocation of power, gas, telecommunications, and water supply lines has also been completed. The construction of lighting, sewage systems, and motorway communications is also at an advanced stage. So far, builders have used 4 million 300 thousand tons of sand (80% of the planned total) and 700 thousand tons of aggregate (82%). Road transport (85%) and rail transport (15%) are mainly used to transport materials. 210 employees are working on section D of the A2 motorway. To build the road, they use 500 transport units and 170 pieces of equipment, including LIEBHERR 944 excavators, CAT D6 and LIEBHERR 734 bulldozers, and A40 articulated haulers.
Innovative construction solutions have been introduced on the section between Stryków and Konotopa, implemented by Strabag. Viaducts over the motorway are made with limited use of formwork. Prefabricated reinforced concrete slabs are also used, which have replaced traditional deck formwork. A prototype of a prestressed reinforced concrete beam was also used, allowing for span lengths of over 30 meters. This method allows for a significant acceleration of viaduct construction and the transfer of element production to prefabrication plants, which makes part of the work independent of weather inconveniences.
The investment must meet specific conditions dictated by environmental protection regulations. Among them are the construction of acoustic screens, retention basins, and wildlife crossings, of which there are 54 on section D according to the design, and whose construction has already been completed. Meanwhile, work is underway that will result in public utility facilities. On the construction section for which Strabag is responsible, according to the design, a toll collection station (SPO – Tłuste) and a toll collection point near Pruszków (PPO – Pruszków) are to be built, as well as two service areas (MOP – Brwinów) near Brwinów, where gas stations and catering and motel buildings will eventually be created. These facilities are under construction and will be completed next year in accordance with the schedule. According to forecasts, more than 70,000 vehicles per day will travel on this section in 2012.
The value of the entire project implemented by Strabag is PLN 527.7 million net. In October 2011, the progress of work will reach 45%, which will be equivalent to PLN 237 million net. The entire investment is expected to consume 20,000 cubic meters of bridge concrete, 3,000 tons of reinforcing steel, and will include 3 million cubic meters of earthworks.