Jaw-Dropping: The Most Expensive Bridge Projects in the World

1. The Navajo Bridge

Place of origin: Page, Arizona Founded: 1927 (first), 1993 (second) Expense: $25.12 million (second), $5.94 million (original) The Navajo Bridge, which spans the Colorado River in Grand Canyon National Park, is made up of two steel spandrel arch bridges and is named after the Native American tribe that resides in Arizona. The 1993-built, more recent bridge is a segment of US Route 89A. Constructed in 1927, the elder structure is exclusively appropriate for pedestrian and horseback riding.

Navajo Bridge | Shutterstock / ©4kclips Before the Arizona State Legislature changed the name in 1934, the Navajo Bridge was known as the Grand Canyon Bridge. With its initial span measuring 467 feet and its second span reaching 470 feet, the Navajo Bridge is the ninth-tallest bridge in the United States.