Recent incidents, including a bridge collapse in Minneapolis and a steam tunnel explosion in New York City, have brought the nation's aging infrastructure into the spotlight. What are some of the country's major problem areas?

I-71, Columbus, OH: Years of poor maintenance have led to erosion and a rise in quicksand traps that swallow semitrucks whole

Four Corners Power Plant, Fruitland, NM: Aging gerbil no longer able to power Southwest

Water Treatment Facility, Missoula, MT: Constructed on Indian burial ground, ancient curse causing foundation to settle unevenly

Disney World Monorail, Orlando, FL: Once purported to run entirely on happy thoughts, the 36-year-old Disney monorail system has relied increasingly on regular electricity

Statue of Liberty, New York City: Lady Liberty is showing stress fractures and other structural damage following more than a century of being leaned on by huddled masses

Seven Mile Bridge, Key West, FL: Overburdened by discarded responsibilities

Levee system, metropolitan New Orleans: Actually, it's in perfect condition