After doing a search for animating the Foundation progress bar, I came across a ZURB forums post. However, I was trying to avoid using JavaScript to do the animation. So, if anyone out there is interested in a CSS-based method for animating the ZURB Foundation progress bar, just drop this CSS into your stylesheet:

.progress .meter {
	-moz-transition:width 0.7s ease;
	-webkit-transition:width 0.7s ease;
	-transition:width 0.7s ease;

Adjust the transition properties as you see fit, but leave “width” in there, since that’s the property that changes on the .meter element.