Hark, A Bridge! North Fork Payette River Bridge

The North Fork Payette River Bridge near Smiths Ferry, Idaho, is a historic reinforced concrete arch bridge built in 1933. It was a work of Charles A. Kyle. It has also been known as Rainbow Bridge. 

"After 92 years of blistering hot summers and bitterly cold winters and millions of vehicles traversing it, the Idaho Transportation Department says the bridge is becoming unsafe. ITD is working on plans to replace the bridge, which was built in 1933 and is on the National Register of Historic Places."

"Is it too late to save Idaho’s iconic Rainbow Bridge?", Idaho Statesman; Scott McIntosh; Aug. 5, 2025