Discover the Costliest Bridge Projects Around the Globe

9. Bridge on Aiola Island

Located in Austria's Graz Founded in 2003 Expense: $7.8 million * Constructed in 2003, the Aiola Island Bridge is also referred to as the Mur Island Bridge. Thanks to Acconci Studio, led by designer Vito Acconci of New York City, it took a year to design. This unusual pedestrian bridge over the River Mur necessitated the construction of a fictitious island.

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Aiola Island Bridge on Pinterest and @arquitecturaespectacular The biggest draw is the futuristic island itself. Acconci attributes the unique shape of the platform to his passion for "architectural styles and art...from the Middle Ages." The two bridges that cross the River Mur to get to the island link the two sides of Graz, Austria. Mur Island is expected to last for fifty years.

10. Ojuela Bridge, Puente de

Located in Mexico's Durango Founded in 1898 Price range: $30–40,000* Many times, the Puente de Ojuela Bridge appears in lists of the "Most Dangerous Bridges" in the world. Constructed in the late 1800s by John A. Roebling Sons & Co., a New York company, the bridge is undoubtedly peculiar. Wilhelm Hildenbrand was its designer. Situated in Mapimi, Durango, Mexico, it led to the deserted Ojuela Goldmine mining village.

Bridge at Puente de Ojuela, Wikimedia.org/Miryam Zarzar Before being renovated as a tourist destination in the early 1990s, the 1,870-foot-long Puente de Ojuela sat abandoned for over a century—and, some online sleuths claim, haunted. The pedestrian exclusively uses the bridge. On the bridge, there are two plaques honoring "the people who worked in...the mineral town."