RENO, Nev. (AP) — A day after a deadly earthquake struck Mexico City, University of Nevada scientists will mimic quakes to test new bridge designs developed to help the structures better withstand violent temblors. The engineers on Wednesday will rattle a 100-ton, 70-foot (21-meter) bridge model to see how it holds up on a giant contraption in a Reno seismology lab called a "shake table." Some design work by the engineers has been incorporated into a highway off-ramp under construction in Seattle.