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The works have required special building work to prevent future declines seats or floor.

The Government delegate, Rafael González Tovar, and the head of the Provincial Road Demarcation of the State, Ángel García Garay, inaugurated this morning the gazebo that enhances the binding of Santa Catalina, which represents an investment by the Ministry of Public Works 1.57 million euros.

This work will improve the flow and safety on the movement to facilitate the incorporation into the highway from the southern ring road with a direct branch can make the turn with greater comfort and reduce crashes that occurred with the previous route.

González Tovar has been reported that the existing terrain in the area, the works have required special work to prevent further consolidation differential settlement, or decreases in the pavement, yet they have managed to put into service a month advance on the scheduled execution time, which ended in late August.

Traffic intensity

Moreover, the government delegate recalled that in 2007 (before start of work now completed), the average daily circulation in the area had reached in the trunk highway of 143,681 vehicles per day.

To this was added to the circulation in the west of Murcia Round had been growing for several years, why the Government considered it necessary to remodel the link on this road with the Ronda Sur of Murcia, the section providing greater capacity and safety users.

The Road Safety Study was undertaken for the preparation of the project, it was found that the accident was not high in proportion to the existing traffic volume, but the majority of accidents and collisions produced by scope and infringement the rules by speeding, and driving distraction was the most frequent contributing factor.

For all these reasons - González Tovar noted - it was considered desirable to increase the capacity of the branch exit of the motorway, direction Madrid - Round South that there were no lines or ranges of vehicles on the trunk highway and facilitate the incorporation into the highway from the southern ring road, building a direct branch in which there was no need to carry out the uncomfortable current rotation to reduce collisions at the entrance to the highway.

Roundabout

The government representative noted that the works have opened today involved the construction of a roundabout is 70 meters in diameter at the existing intersection under the freeway and the road to Santa Catalina, which will give greater fluidity and safety to the roads access to it.

This roundabout has a central ring formed by three lanes of 4 m.

and two shoulders width of 1 m and has six Public Lighting 10 m.

high.

It brings together new direct branches described above for entry and exit to the highway, replacing the "links" above which will lead to a significant improvement in safety, comfort and convenience during the link.

In addition, the Development Ministry's action in the area has included the renovation of the existing pavement by an extended micro asphalt layer 3 cm thick, and areas to expand the platform has provided a new firm which section consists of 50 cm.

selected soil, 25 cm.

of artificial gravel and 25 cm.

hot agglomerate divided into three layers.

Soil treatment

To build the new branches and trailing the roundabout was necessary to build two separate walls of reinforced concrete of variable height, whose foundation required to improve existing soil conditions by the procedure known as vibro replacement.

This procedure, which is used in very sensitive to soil moisture changes - that is the case of the existing bond of Santa Catalina - is to replace part of a natural field stone columns which expel excess water dry quickly and leave the area, which allows on the same foundation of the walls without them going down slowly over time to be diminishing moisture over the months.

Street lighting has also been a marked improvement, with the relocation of existing lighting columns and, in the current trunk highway, as in the legs and newly built roundabout, so that has been shaped by staffs 10 meters staggered, and sodium vapor lamps High Pressure powers between 180 W and 250 W.

Finally, the project implemented by the State Highway Demarcation in Murcia includes the decoration of the central island of the roundabout with different types of plantations.

Source: Delegación del Gobierno en Murcia