Idaho Code § 40-513A

The bridge spanning the Snake River Canyon on U.S. Highway 93 south of Interstate Highway 84 near the city of Twin Falls, Idaho, shall be designated as the “I.B. Perrine Bridge” to honor I.B. Perrine for his part as founder and father of the Twin Falls area. His dream for agriculture and his efforts to bring water to the valley set in motion the development we see today. The transportation department shall erect suitable signs so designating the bridge as the “I.B. Perrine Bridge.”