The Caissons Go Rolling Along

On the 4600 block of Broadway, east side of the street

The old and the new at Broadway and Clifton

So this is what's involved in building infrastructure strong enough to support pillars that will, in turn, support elevated tracks over Broadway and Leland.  According to CTA, the soil in this area is particularly poor, so CTA is drilling caissons in the ground to bolster the load that the support pillars will bear.

The area that used to be the Majestic Men's Store will eventually be filled with support pillars for the new tracks that will run across Broadway at Leland.