Replacing CTA Viaduct at Greenleaf Street -- June 8 to 10, 2012

Large jaws grabbing rail ties smaller cat on viaduct dumped there

Growing stack of rail ties where jaws machine dumped them

A wider view showing rail crane, large scooper on viaduct removing balast, small cat removing rail ties, and huge jack hammer

Another wide view showing same equipment except jaws at right is picking up more rail ties

Waiting for rail crew to finish removing ties and ballast (note large piles of dirty ballast in center of viaduct)

Jaws holding many old rail ties to deposit in dumpster truck in foreground

Jaws going after more rail ties

Huge jack hammer in foreground while we waited for all the dirty ballast to be removed from the viaduct

Finally (around 1:15AM) both the Jaws and the huge jack hammer start demolition of old contrete viaduct

Further progress in demolition of old contrete viaduct

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