Ask Kelly: Where are all the barges going?

This week's "Ask Kelly" segment is about a slow-moving mode of transportation that frequents Pittsburgh's rivers: Barges.Dan from South Park asked, "Are they carrying materials to be processed? Or taking finished goods away from being processed? Who owns the barges? Why do they park along the river?"We spoke with experts at the Port of Pittsburgh Commission to find out. Take a look at the video above for details.