Photo: Gustavo J. Parra-Montesinos Steel-fiber-reinforced-concrete beam (above, rotated 90°) needs no diagonal reinforcement. “We have a design for which you do not need diagonal bars, a ...

Tests on beams with span-to-overall-depth ratios of 1.0 to 3.3 eliminated 70% of diagonal rebar in coupling beams and used only special column-type confinement at the beam ends.

One way is to put diagonal braces that connect the deck beams to the vertical posts. These braces are typically cut at a 45-degree angle. It’s really important to bolt these rather than relying ...

To bring the bridge into working order, crews have to replace the vertical and diagonal beams, replace about 30 feet of guardrail, and dig out and replace concrete that supports the guardrail.