Employer: Road Infrastructure Agency
Contractor: Patstroy-92 AD as a partner in Consortium "Struma-2"
Project implementation period: 2013 – 2015

Description of the project:
Patstroy-92 AD together with its partners in Consortium “Struma - Lot 2” executed the construction of Lot 2 of Struma Motorway, Dupnitsa - Blagoevgrad Road Section. The project was implemented on “design and build” basis with the financial support of the Operational Programme “Transport 2007-2013“.

Type and quantity of completed works:
The section is 37.484 km long and has a load-bearing capacity of 12.5 tons/axis.

Under the project, Patstroy-92 executed the following construction works and structures:

• Road junctions along Struma Motorway route when it crosses other roads: Boboshevo road junction and Blagoevgrad road junction
• A two-tube tunnel - 355 m long
• Five viaducts - respectively 952 m (the longest one on the section), 350 m, 300 m and two of them - each 90 m long
• Five overpasses - respectively 76 m, three of them - each 72 m, and 54 m long
• Eight bridges – each 10 m long
• Five farm underpasses – each 8 m long
• 2.5 million m³ of earth mass were excavated and 2.3 million m³ of embankments were erected.
• 275,000 tons of various asphalt mixtures were laid.
• Reliable motorway drainage is provided through numerous drains. Concrete beds were laid to line drain ditches. Reinforced-concrete culverts and drain-pipes with different diameters were also installed as well as drainage collectors for surface and ground waters.
• Reorganization and reconstruction of public utility mains: relocation of power transmission lines, 20 kV overhead power lines, underground telecommunication conduits and optical cables. The former position of the existing gas pipelines was changed and water supply pipelines and irrigation channels were also displaced to safer locations, etc.
• Over 84,000 m road restraint system was installed – an elastic protective fence, animal safety net (over 42,000 m²). Noise barriers were erected in the sections passing close to populated residential areas.
• More than 4,500 reflective road signs and traffic control signboards were mounted and 25,500 m² of road markings were laid, thus providing high levels of visibility under wet night conditions.