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No, the Harbour Bridge is a Steel arch bridge as the frame structure supporting it is an arch, but however consists of triangles.
it is a hybrid between an arch bridge and truss bridge. so it is classified as an arch and truss
A truss is the structure that holds the roof(or bridge or whatever). Purlins are members holding a few trusses together. A truss is a simple frame made from two force members.
Warren truss bridge
Glenville Truss Bridge was created in 1885.
a truss
the truss
trussesWarren truss bridge
A truss is a diagonal brace which provides structural support for a bridge span by extending between a vertical member and the bridge span.
The type of bridges are: -truss bridge -arch bridge (truss arch bridge) -suspension bridge (suspension truss bridge) -cantilever bridge
you can check this out link below- its about Truss Bridges
Ouaquaga Lenticular Truss Bridge was created in 1888.