Worst highway bottlenecks

(this is all well and good, but just come up with a cure for the "tunnel-crawl" syndrome that happens on either side of the Squirrel Hill Tubes..jim)

A study for the American Highway Users Alliance found these were the worst congestion sites in the United States, followed by the number of vehicles handled daily and annual hours of delay. (more)

Los Angeles Ventura Freeway US-101 at I-405 interchange; 318,000 cars; 27,144,000 hours.

Houston I-610 at I-10 interchange; 295,000 cars; 25,181,000 hours.

Chicago I-90/94 at I-290 "Circle Interchange;" 293,671 cars; 25,068,000 hours.

Phoenix I-10 at SR-51/202 "Mini-Stack" interchange; 280,800 cars; 22,805,000 hours.

Los Angeles I-405 at I-10 interchange; 296,000 cars; 22,792,000 hours.

Atlanta I-75 at I-85 interchange; 259,128 cars; 21,045,000 hours.

Washington, D.C. I-495 at I-270 interchange; 243,425 cars; 19,429,000 hours.

Los Angeles I-10 at I-5 interchange; 318,500 cars; 18,606,000 hours.

Los Angeles I-405 at I-605 interchange; 318,000 cars; 18,606,000 hours.

Atlanta I-285 at I-85 "Spaghetti Junction" interchange; 266,000 cars; 17,072,000 hours.

Chicago I-94 at I-90 interchange; 260,403 cars; 16,713,000 hours.

Phoenix I-17 at I-10 "the Stack" interchange to Cactus Road; 208,000 cars; 16,310,000 hours.

Los Angeles I-5 at SR-22/57 "Orange Crush" interchange; 308,000 cars; 16,304,000 hours.

Providence, R.I.I-95 at I-195 interchange; 256,000 cars; 15,340,000 hours.

Washington, D.C.I-495 at I-95 interchange; 185,125 cars; 15,035,000 hours.

Tampa, Fla. I-275 at I-4 "Malfunction Junction" interchange; 201,500 cars; 14,371,000 hours.

Atlanta I-285 and I-75 interchange; 239,193 cars; 14,333,000 hours.

Seattle I-5 and I-90 interchange; 301,112 cars; 14,306,000 hours.

Chicago I-290 Eisenhower Expressway between exits 17b and 23a; 200,441 cars; 14,009,000 hours.

Houston I-45 Gulf Freeway at US-59 interchange; 250,299 cars; 13,944,000 hours.

San Jose, Calif. US-101 at I-880 interchange; 244,000 cars; 12,249,000 hours.

Las Vegas US-95 at I-15 "Spaghetti Bowl" interchange; 190,600 cars; 11,152,000 hours.

San Diego I-805 at I-15 interchange; 238,000 cars; 10,992,000 hours.

Cincinnati I-75 from Ohio River Bridge to I-71 interchange; 136,013 cars; 10,088,000 hours.