Study finds Chicago home to nation's worst bottleneck

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Study Finds Worst Traffic Bottleneck in the Country

CHICAGO (AP) -- A study by an advocacy group found the nation's worst traffic bottleneck in terms of hours of delay is a stretch of Chicago's Kennedy Expressway.

The study released Monday by the American Highway Users Alliance assessed bottlenecks, finding that the top 30 cause at least one million hours of delay each per year and three million on average.

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The study found the top 50 bottlenecks are concentrated in the nation's largest cities, with the worst being a 12-mile stretch of the Kennedy Expressway near Chicago's Loop business district. The study asserts that congestion cost motorists 16.9 million hours last year and about 6.3 million gallons in wasted fuel.

Eleven of the 30 most severe chokepoints are in the Los Angeles region, with the New York metropolitan area home to five. The I-35 corridor running through downtown Austin, Texas, is 10th.

See images of the cities with the worst overall traffic:

11 PHOTOS
Cities with the worst traffic
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Study finds Chicago home to nation's worst bottleneck

10. Riverside-San Bernardino

(Photo by Don Kelsen/Los Angeles Times via Getty Images)

9. Houston

(AP Photo/David J. Phillip)

8. Chicago

(Photo by Scott Olson/Getty Images)

7. Seattle

(Photo by George Rose/Getty Images)

6. Boston

(Photo by Matthew J. Lee/The Boston Globe via Getty Images)

5. San Jose

(Photo by Tony Avelar / The Christian Science Monitor via Getty Images)

4. New York City

(Photo by Spencer Platt/Getty Images)

3. San Francisco

(Photo by Justin Sullivan/Getty Images)

2. Los Angeles

(Patrick T. Fallon/Bloomberg via Getty Images)

1. Washington, D.C.

(Photo by Chip Somodevilla/Getty Images)

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