Tied-arch bridge

Generic tied-arch bridge with a movable support on the right side.
The Fort Pitt Bridge. The arches terminate atop slender raised piers and are tied by the road deck structure.
A rail bridge in Argos, Peloponnese featuring multiple tied arches.

A tied-arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch(es) are borne as tension by a chord tying the arch ends rather than by the ground or the bridge foundations. This strengthened chord may be the deck structure itself or consist of separate, independent tie-rods.


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