Dirt twirls off of a huge drill bit after a worker digs a hole to place a pile.
Crews are installing piles for temporary shoring along I-405, just north
of Coal Creek Parkway, as part of the northbound freeway widening.
A worker prepares to bore (make a hole) under I-405 to install electrical
utility conduit. The machine allows crews to install utilities without closing
I-405 to dig a trench in the freeway.