The I. B. Perrine Bridge is four-lane truss arch span in the western United States. Located at Twin Falls, Idaho, it carries U.S. Highway 93 over the Snake River Canyon, connecting to Jerome County and Interstate 84. Originally named the Twin Falls-Jerome Intercounty Bridge, a steel cantilever bridge was opened to traffic 90 years ago in September 1927; at the time it was the highest bridge in the world. The privately financed $650,000 structure was originally a toll bridge, but the tolls were eliminated in 1940 after the bridge was purchased by the state of Idaho.