This is a graphic showing the new South Portal Interchange. For years the city had been trying to figure out a way to ease the traffic congestion at this busy intersection, which handled over 100,000 vehicles per day. At rush hour, the delay was tough on motorists. Finally, in 1999, the city acted. By the end of the century the new interchange was in place and traffic congestion was lessened to a large degree.

* Photo courtesy of the Pittsburgh Post-Gazette *