Wolf Creek Bridge Letchworth State Park 1
Photo taken by Dana and Kay Klein in May 2017
BH Photo #389310
Thanks for the kind words! The trick is to look underneath the arch. Tthis area is called the barrel or intrados. The multi-plate arches should have the corrugated metal visible underneath. If you see smooth concrete (or concrete with a pattern of boards), then it is more likely to be a stone-faced concrete arch. If you see spray-on concrete (shotcrete, gunite, having a rough texture) it may be a true stone arch which was repaired. The example you have used here is a rare example of what appears to be a true stone arch built in the 1920s because I can see a pattern of stones underneath . It is rare because the 1920s and the 1930s is when the concrete arches with stone facing became more common. The multi-plate arches showed up ca. 1932.
Nathan similar time frame with stone facing, is their a term for these? Thanks for all you do by the way. YOU ROCK DUDE!