Under the watchful eye of the busiest airport in Europe, the ground sinks to give shape to one of the enormous concrete hangars where planes rest.

The so-called Kilo parking runway, between Heathrow’s Kilo and Bravo runways, has five parking spaces for large aircraft to the northeast of the airport’s Terminal 1. It is the most striking part of Heathrow’s Q6 capital project, which Ferrovial Construction participated in.

The thick steel framework awaiting the arrival of concrete gives us some idea of the new structure’s resistance. Now running, construction of the Kilo track involved excavating a box 100 by 190 meters and 15 meters deep, reinforced with diaphragm walls and ground anchors. Some 320,000 cubic meters of earth were extracted to build it.

This new parking lane wasn’t the only task for Heathrow’s Q6 investment program. Updating many of the airport’s assets – without interrupting movement at one of the largest air traffic centers in the world – meant improving the aircraft taxiways, updating the concrete linings and asphalt, and many other construction projects.

In just one day, 2,600 cubic meters of PQC pavement and 780 cubic meters of manual formwork were spread. These record-breaking figures brought the works to a successful close without bringing Heathrow to a standstill. The more than 80 million annual passengers at the London airport didn’t see service interrupted while the infrastructure was prepared for the future.