<P> The Sundial Bridge is a cantilever spar cable - stayed bridge , similar to Calatrava 's earlier design of the Puente del Alamillo in Seville , Spain ( 1992 ) . This type of bridge does not balance the forces by using a symmetrical arrangement of cable forces on each side of its support tower ; instead , it uses a cantilever tower , set at a 42 - degree angle and loaded by cable stays on only one side . This design requires that the spar resist bending and torsional forces and that its foundation resists overturning . While this leads to a less structurally efficient structure , the architectural statement is dramatic . The bridge is 700 feet ( 210 m ) in length and crosses the river without touching the water , a design criterion that helps protect the salmon spawning grounds beneath the bridge . The cable stays are not centered on the walkway but instead divide the bridge into a major and minor path . </P>
<P> The Sundial Bridge is a cantilever spar cable - stayed bridge , similar to Calatrava 's earlier design of the Puente del Alamillo in Seville , Spain ( 1992 ) . This type of bridge does not balance the forces by using a symmetrical arrangement of cable forces on each side of its support tower ; instead , it uses a cantilever tower , set at a 42 - degree angle and loaded by cable stays on only one side . This design requires that the spar resist bending and torsional forces and that its foundation resists overturning . While this leads to a less structurally efficient structure , the architectural statement is dramatic . The bridge is 700 feet ( 210 m ) in length and crosses the river without touching the water , a design criterion that helps protect the salmon spawning grounds beneath the bridge . The cable stays are not centered on the walkway but instead divide the bridge into a major and minor path . </P>
who designed the sundial bridge in redding ca
who designed the sundial bridge in redding ca
Puente del Alamillo in Seville
Puente del Alamillo in Seville