Firefighters douse blazes after a freight train loaded with oil derailed in Lac-Mégantic in Canada's Quebec province on July 6, 2013, sparking explosions that engulfed about 30 buildings in fire. AFP/Getty Images hide caption

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The James C. Nance Memorial Bridge, which connects Purcell and Lexington, Okla., is closed for repair in March 2014. A handful of states have raised their gas taxes in part to fund transportation projects like bridge and road repairs. Sue Ogrocki/AP hide caption

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Emergency workers stand near a burned-out SUV that was struck Tuesday night by a Metropolitan Transportation Authority Metro-North Railroad commuter train near the town of Valhalla, N.Y. Mike Segar/Reuters /Landov hide caption

itoggle caption Mike Segar/Reuters /Landov

James Robertson, 56, walks to catch a bus in Detroit last month. The bus won't take him all the way to his job in Rochester Hills, so he has to walk the last eight miles. Ryan Garza/Detroit Free Press/TNS/Landov hide caption

itoggle caption Ryan Garza/Detroit Free Press/TNS/Landov

Gov. Jerry Brown speaks to the crowd during the California High-Speed Rail Authority groundbreaking event in Fresno. The $68 billion project faces challenges from Republicans in Congress, and from Central Valley farmers suing to block the train from crossing their fields. Gary Kazanjian/AP hide caption

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Passengers ride a cable car that links downtown La Paz with El Alto, Bolivia, in September. The trip costs about 40 cents and takes 10 minutes — compared with 35 cents and a half-hour by minibus. Juan Karita/AP hide caption

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Surveyors work below the Interstate 495 bridge over the Christina River near Wilmington, Del., on Tuesday. The bridge was closed at the beginning of the week after officials discovered that eight support columns were tilting. Patrick Semansky/AP hide caption

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Saudi women get into a taxi outside a shopping mall in Riyadh in 2012. Plans for a subway system in the Saudi capital are likely to provide the biggest benefits to women and the poor. Fayez Nureldine/AFP/Getty Images hide caption

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Law enforcement agents arrive at a United Parcel Service staging area at Newark Liberty International Airport, where a cargo plane was searched and a suspicious package removed Friday. Joe Epstein/FR170243 AP hide caption

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