A $1-billion program to modernize Chicago Transit Authority's Red Line—the backbone of the city's century-old urban rail and one of the busiest routes in the U.S.—is about to get under way.
The long-overdue project will rehab Chicago's most traveled passenger rail, which serves 240,000 daily riders. The train stations are outmoded, and track deterioration has prompted slow zones that bog down riders' commutes.