Bridge at Mouth of Rogue River, Spanning Rogue River on Oregon Coast Highway, Gold Beach, Curry County, OR
- Upscale 2x7680x5510
Significance: The bridge is the first reinforced-concrete arch span built in the U.S. using the Freyssinet method of arch decentering. In this technique, arch ribs are pre-stressed by hydraulic jacks placed at their crowns to compensate the deformation due to shrinkage of concrete, differential temperature changes, movement of supports, and elastic and plastic shortening. The result is that , in theory, supports, and elastic and plastic shortening...
Unprocessed Field note material exists for this structure: FN-22
Survey number: HAER OR-38
Building/structure dates: 2003 Subsequent Work