It appears that there is some new drainage being installed in Calle Alcor at the moment.
The workmen started at the Velas Blancas roundabout and are slowly working their way along from there. At present the roadworks are in front of the first and second blocks of houses in La Ladera. With still some way to go until it reaches the main entrance into the urbanisation.
It is single lane traffic in both directions on the other side of part of Calle Alcor. At one point there were manually operated traffic lights in place. However at the moment you just have to wait and be careful when you go through.
I think that based on the progress so far this disruption will be there for some time. So worth trying to avoid the area if possible. Particularly at peak times.