Arch bridges are one of the oldest types of bridges and have great natural strength. Instead of pushing straight down, the weight of an arch bridge is carried outward along the curve of the arch ...

We will begin a new series for 2015 using the 26 successive letters of the ... Clearly "X" and "Z" could be a challenge, but "A" is easy! "A" is for arch. The simplest description for an arch ...

Did you know a double arch bridge is hidden in New York and it's in the Hudson Valley? Have you ever seen it? Most New ...