In your April 30 column, you mention that there seems to be less congestion at the Springfield Mixing Bowl than before the ... Both of these are on Metro's maps posted in rail cars.

For D.C. drivers, Springfield, Va. is considered a chaotic mess of traffic. Between its famed mixing bowl and rush hour commutes, heading to the Northern Virginia suburb requires at least 30 minutes ...

Some of the biggest traffic delays to occur during the eight-year construction of the Springfield interchange ... meet to form what is known as the Mixing Bowl, began in 1999.

work on the $676 million Springfield interchange in Northern Virginia, site of one of the East Coast’s worst bottlenecks, is complete. The new interchange, dubbed “The Mixing Bowl,” includes ...