My dad was a civil engineer; his specialty was water- and sewage-treatment. It was not uncommon when we were on vacation that he’d drive us to a treatment plant that was of particular interest to him. (And: they held little to no interest to me.)

He also like bridges; once when I lost out on a summer job because of a late-spring bout of mono, he took me with him on a business trip as some sort of a consolation. Along the way, we stopped to look at a bridge that had recently been washed out in a flood. He told me about the design flaws that had put the bridge in peril. (And: that held little to no interest to me.)

Yet somehow I ended up here, getting myself quite interested in this bridge. It’s called the Rainbow Bridge (named before that term’s current connotation) and it’s 100 years old this year. It is only one lane wide and is a single-span design called a Marsh arch, after its designer James Barney Marsh. And, it’s the only surviving bridge of this design on the entire 2,448 miles of Route 66.

near Baxter Springs, Kansas
photographed 4.5.2023