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 ...

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 ...

U.S. News Insider Tip: Grab your camera and go for a stroll on this historic pedestrian-only bridge which spans over the Mississippi River. Be sure to complete your experience with a reservation ...