While we don't often think of what goes on under our feet, the drillers of DOT's Geotechnical Engineering Bureau are tasked with exactly what makes up the ground beneath us.

On any given project, drillers will take core samples, allowing engineers to create a soil profile and select the most appropriate foundation type for the structure being analyzed.

On this episode of The DOT POD, Josh and Anya welcome in two members of the Geotechnical Engineering Bureau, Steve Heiser and Ernie Holmberg, to find out more about this crucial work that often goes unnoticed.