(More typically, arch bridges span less than 800 feet.) Centering under construction Constructing an arch bridge can be tricky, since the structure is completely unstable until the two spans meet ...
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 ...
Starting the week of December 2, the Minnesota Department of Transportation will close the downtown Minneapolis side of the Stone Arch Bridge. The portion of Portland Avenue that crosses under ...