When Phase I of the Interchange Improvements Project is complete, a new, elevated, two-lane ramp will carry traffic from I-64 west to I-264 east, over a new two-lane collector-distributor road to Newtown Road and beyond.
Before all those bridge structures can rise up, the construction team must drill down. Workers are now drilling deep into the ground and installing 165-foot cylindrical steel reinforcement cages into the shafts.
Those steel cages are constructed on-site, as shown in the photo above. The project will require 43 bridge piers, and each pier will be supported by a group of drilled foundation shafts.
After each cage is installed, a portion of the steel will remain above ground (bottom photo).
rete is poured into the shaft, and later the cages will be tied into bridge columns.