Pennsylvania Turnpike

In Pennsylvania there are plans in the works to take property in order to expand the Pennsylvania turnpike:

WHITPAIN - Preliminary plans for the proposed, $250 to $300 million, six-lane widening and reconstruction of the Pennsylvania Turnpike's Northeast Extension from the Mid-County to Lansdale exit were presented to several hundred local residents Thursday night at St. Helena School.

Construction on widening the 10.5-mile, four-lane highway, the busiest four-lane section of the Pennsylvania Turnpike, will start in 2008 and be completed in 2014, said Carl DeFebo, a Pennsylvania Turnpike Commission spokesman.
Residents of the Timberfare Circle cul-de-sac in Plymouth loudly objected to the proposed, "total taking" of two homes owned by Yves and Joretha Bourjolly and Anne Marie King on the circle for a required storm-water detention basin.
The commission plans to take nine properties "completely" and 150 to 200 properties "partially" to widen the roadway, said Gerald H. Rollman, commission reconstruction program coordinator.

So, once in a while the power of eminent domain can be used for a public use; not just for a public purpose.