I found this interesting picture in a promotional booklet produced by Northern Pacific RR. It was a guide to what you were seeing out the train windows as you traveled across the country.
It's 10 degrees here in central Minnesota this morning, prompting thoughts about ice on the lakes and rivers nearby, and --as anybody would--wondering how strong it is, really?
The inset photo there was an ICE BRIDGE, in 1880, used in winters before the steel bridge was finished in 1890. Maybe winters were colder and longer back then, or maybe people were more trusting. Just the idea gives me the willies, tho.