Approximately 34,000 tons of sand and stone has been barged to the end of Park Point for the Sky Harbor runway realignment project.
According to project spokespeople, the material is being used for the completion of a new shoreline.
Meanwhile, Runway 14 has been displaced by 391 feet to the south to allow for work in the Runway Safety Area.
It's all part of a major, three-year effort to improve the runway's safety.
Officials say several protected, old-growth red and white pine trees next to the runway have grown tall enough to be considered obstructions.
The second phase of the project is expected to start in the fall of 2018.