Collapsed California bridge earned 'A' rating just last year

Collapsed California bridge earned 'A' rating just last year:
"A 48-year-old bridge that collapsed Sunday in a rain-swollen California desert earned an "A" rating just last year, federal records show.
Inspectors gave the eastbound portion of the Tex Wash Bridge a "sufficiency rating" of 91.5 out of 100, according to the Federal Highway Administration.
The bridge also had one of the highest possible flood safety ratings, which means it should have withstood even the heaviest rainfall.
And then, on Sunday, more than 5 inches of rain fell in the open desert east of the Coachella Valley.
Rushing water flooded into the wash beneath the bridge and ate away at the dirt around the foundations.
Eventually, one end of the eastbound lanes cracked free of the highway and tumbled to the desert floor, cutting the primary route between Arizona and Southern California.
Built in 1967, the Tex Wash Bridge sits on Interstate 10, linking Los Angeles to Phoenix. Located just east of Palm Springs, Calif., the bridge is owned and maintained by the California Department of Transportation, or CalTrans. Officials there said they were investigating how a highly rated bridge managed to fail so spectacularly."