The object of the project is modernisation of the D1 motorway in the section Psáře – Soutice (km 48.590-56.300) in the length of 7.710 km. The actual modernisation consists of extending to category D 28 or 2 belts with a reinforced width of 11.5 m and improving the constructional state of the motorway. These modifications will contribute to a substantial increase in safety and continuity of operation on this heavily loaded communication as well as delaying normal repairs.