Year:
Under Construction

Client:
MINISTRY IN REGIONAL GOVERNMENT OF ASTURIAS OF INFRASTRUCTURES, LAND POLICY AND HOUSING

Location:
Asturias, Spain

Contract cost:
13,291,056.43 €

Services provided:

• Technical Assistance
• Control and Survey
• Health and Safety coordination

Description:

Reference work corresponds to the remodelling of the current link road for A-8 Motorway, located at the KP 403, very closely to “El Montico” petrol station, which directly leads to the road AS-326 (Tabaza – Tremañes). Projected works is to transform the current semi-junction into a complete one with the construction of two roundabouts located on each side of the motorway, and an underpass below A-8 motorway. Link road gives also access to the road CE-7 and Cogersa road, as well as to the future industrial and logistic park ZALIA. Maintenance of the traffic on A-8 motorway is essential while the construction of the underpass, so this one will be carried out in different phases.

The main features of the works are detailed here:

• Section: Transversal section type of the main road’s segment joining the two roundabouts is made of two way roads with two 3.50 m lanes in each one, with outer edges of 2.50 m and 1m inner edge. Referring to the roundabouts, inner radius are 42.5 and 30 meters respectively, roadways have two lanes of 5 meters each one, 0.5 meters inner edges and 1 meter outer edges.
• Road Surface: Section used for the main road, roundabouts and branches consists on 30 cm of bituminous layer and 25 cm of crushed gravel.
• Esplanade: Section used for main road, roundabouts and branches is formed by 50 cm of selected soil and 30 cm of soil stabilized with cement.
• Underpass below A-8 motorway: The structure designed to cross A-8 motorway has a total length of 80 meters and total width of 23.50 meters.
• Tabaza River channelling: Projected works have forced the deflection of Tabaza River. For this reason, it is necessary to make a pipe for a total length of 285 meters, including three concrete frame structures of 6x3 meters, with a total length of 135 meters.
• Walls: There is a retaining wall in the left edge of the CE-7 road replacement. It has a total length of 180 meters and 8 meters high.
• Earthworks: Approximately 153,000 m³ are dug and 209,000 m³ are refilled.