The purpose of the public procurement is to appoint a contractor for the preparation of a technical design and execution of construction and installation works (SMP) (engineering) of the above-described site, and in this regard to conclude a contract for its implementation, with a view to the preparation of a complete and lawful technical design, which will serve to carry out quality construction of the site, in accordance with the regulatory requirements and compliance with the agreed deadlines. The expected result of its implementation is reducing the share of the population at risk and ensuring disaster resilience. 1.Brief description: The road section is located outside the settlement, entirely in mountainous terrain. There is no data on the design speed for which the geometrical elements of the road have been determined. Situationally, the plot is located in a curve. In level terms, there is a longitudinal slope, ascent (in increasing mileage). The section has a mixed profile: on the left, in a trench: a slope of earth soils and rocks and, on the right, an embankment, about 1.50 to 3.00 m has fallen in the affected area. The subject of the study is the section from km 19+850 to km 20+090. The road in the section has two lanes with the following gauge: lanes: 2 x 3.0 m – 6.00 m; width of banquets: 2 x 1.0 m; Construction of the existing pavement: a wearing layer of asphalt concrete 4 cm; Binder 4 cm; crushed-stone flooring 15 cm; base of ballast 35 cm. The drainage of the section is solved by longitudinal and bilateral transverse slopes. There's a trench on the left. At km 19+960, a culvert ø1000 was built, which was completely compromised: the front wall at the run-off has collapsed and shifted to about 7-8 m, the body of the culvert under the right roadway has been demolished, the concrete rings have been destabilised and shifted. On the left, at the culvert flow, a restriction system is installed for roads with a length of 20 m. On the right, the installed CAP is 648 m long, and in the area of the compromised section it has fallen (about 80 m). The last major repair of the section was carried out in 1999, and in the following years it was maintained within the framework of the program for ongoing repair and maintenance of the Road Infrastructure Agency. In the compromised section there are no identified sections with a concentration of traffic accidents. According to the registers of Kardzhali Regional Roads Administration, there is a fibre optic cable line in the section, owned by Link + OOD, Momchilgrad. Since 20 April 2021, the section from km 17+700 to km 20+700 has been closed to all types of road vehicles by Order of the Director of the Kardzhali Regional Road Administration Office. For the section under consideration, it is necessary to restore and improve the transport and operational qualities and load-bearing capacity of the pavement in order to ensure traffic safety conditions and good drainage of the road. In order to fully control the destabilization processes that have occurred, it is necessary to carry out geotechnical studies that will clarify the engineering and geological conditions in the area of the deformations and the reasons for their occurrence. Based on the results of the engineering-geological study, a project for the permanent strengthening and restoration of the affected section will be prepared and implemented. The project will be prepared with technical elements corresponding to the design speed of the road section, in accordance with the requirements of Regulation No RD-02-20-2/28.08.2018 on the design of roads, subject to maximum adherence to the existing road. 2. Investment project (Draft documentation): The investment project (the Design Documentation) shall be prepared in the Technical Design phase in the volume and content defined in the Terms of Reference for Design (Annex A) attached to this Technical Specification. The design will be carried out in three stages, detailed in the Design Assignment. 3. The subject-matter of the contract shall include a description of the activities to be carried out under the contract, as follows: A) ‘Design’ activity – carrying out research and design works (PDP) and exercising author’s supervision during construction; B) Activity ‘Construction’ – execution of construction and installation works; C) Removal of manifested defects during the warranty periods; D) All other activities necessary for the execution of the subject of the public contract and the warranty maintenance of the work specified in this documentation and its annexes. *Note: A detailed description of the subject of the public procurement is provided in the Terms of Reference for Design (Annex A) and in the Technical Specifications for the Performance of the Public Procurement (Annex B), attached to the procurement documents!
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