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Varna with a new key crossroad

29.05.2020

The construction of a new crossroad between Vasil Levski Blvd., Peyachevich Str. and Devnya Blvd. hasended.
The new crossroad is an elliptical crossroad on one level, with a total length of the ellipse  359 meters, situated in the section from 2+850km to Devnya Str. /with radius R1 = 23.5 metres and R2 = 300.5 metres./
 
Three street laneswith a width of 3.50 metresform the ellipse. The bypass connections have a lane width of 5.50 metresin the direction of Vasil Levski Blvd., Peyachevich Street for those turning right and in the direction from Devnya Street to Asparuhov Bridge for vehicles moving straight.The entrances and exits to the main direction Vasil LevskiBlvd and Devnya Str. have 2 street lanes with a width of 3.50 metres and a total width of 7 metres.

In the direction of Peyachevich Street are built respectivelyan entrance with one street lane with a width of 5.50 meters and an exit with two lanes with a width of 3.50 meters each, a total of 7.0 meters. In the direction of Rayko Daskalov Street are built  inflow and outflow towards the ellipse with radius Rinflow of 12 meters and radius Routflowof 16 meters.In the direction of Probuda Street are built  inflow and outflow towards the ellipse with radius Rinflow of 14 meters and radius Routflow of 16 meters, as well as road construction to organize the traffic with width of the inflow and outflow street lanes - 5 metres. In this section 2 existing culverts have been extended. Respectively, a culvert at km 2 + 850 with dimensions of 6 / 3.5 m is extended by 18 meters and a facility at Devnya Street with dimensions of 12/4 m is extended by 29 meters.

A new lined open canal with a length of 95 metres has been built between the individual facilities. Longitudinal profile - Crossroad in the section from km 2 + 850 to Devnya Street is on one level. The proposed gauge and cross sections of the boulevard, ramps and service street lanes meet the requirements for the class of the street and the design speeds. Construction of the pavement - Achieving the design widths to be fulfilled by implementing a Road structure type "A", for a "very heavy"category of traffic, with an upper base layer of asphalt mixtures and a lower base layer of unsorted coarse-grained mineral materials.

New sidewalks have been constructed . Wheelchair ramps are provided in the area of all intersections.
To achieve the main goal of the project, all drainage facilities have been cleaned, restored, and a new rain drain system has been built.
New street lighting has been constructed at the crossroad. LED lighting fixtures are installed; also new cable power lines, new poles for street lighting as well.
All luminaries offer the possibility to be run remotedly by a system for smart street lighting with full monitoring and management on a level of individual luminaire "CityTouch" from Philips. 

In the section has been performed a correction  of the existing gully withreinforced concrete elements executed  at place.The existing culvert with an opening of 6 m is extended by a culvert with a box-shaped cross section, executedintegrally. A roll of waterproofing is placed on theculvert gutter, protected with safety concrete, on which the road layers are laid. In the section there is an existing culvert, with double-openings 2x5m, with plate elements with a length of 560cm and cross-sectional dimensions.A newly built road slab was poured at place on the slab elements in order to withstand all the loads provided for in the norms without the help of the existing slab elements. The length of the new culvert is 30 meters, clear opening 2x5m, clear height 2.60 meters. The road slab is 45 cm thick, the walls 35 cm thick, the bottom with a variable thickness of 40 cm along the axis to 65 cm at the end. A roll of waterproofing, protected with protective concrete, has been laid on the culvert. The road layers are laid on the protective concrete.
 
The construction of the new roundabout is extremely important for the logistics in the city, not only for the connection of Vasil Levski Blvd., Peyachevich Str., Devnya Str. and the wide city center, the Bus station, the Railway station , but also for the connection of the transport lines in the direction: Asparuhov Bridge, Asparuhovo district, city of Burgas, the southern settlements and municipalities, and to the west: Western Industrial Zone, the city of Devnya, the municipalities west of city of Varna, as well as the Port of Varna.
 
Client: Municipality of Varna 
Contractor: Ingstroyengineering Ltd