Network arch bridge

The inclined hangers with multiple intersections make the network arch bridge act like a truss, with only axial compressible and tensile forces.

A radial hanger arrangement provides an efficient structure, as shown by Benjamin Brunn and Frank Schanack in 2003.

[2][3] Because both the arch and the tie are mainly subject to axial forces, their cross sections can be very small.

Engineer Octavius F. Nielsen applied for a patent on tied arches with inclined hanger rods in 1926.

The network arch type, with multiple crossings, i.e. overlap in the horizontal axis, was developed by Per Tveit to avoid this.