Work is set to begin on a four-year, $475-million makeover of Chicago's Circle Interchange, the nation's worst bottleneck for trucks and one of the worst for automobiles.
The Illinois Department of Transportation says the revamped interchange, where the Eisenhower, Kennedy and Dan Ryan expressways converge west of Chicago's Loop, will reduce congestion by at least 50%. IDOT estimates the project will create 5,000 construction jobs.