NTSB recommends 68 bridges in U.S. be evaluated for risk of collapse
NTSB recommends 68 bridges in U.S. be evaluated for risk of collapsehttps://wpnnradio.com/wp-content/themes/movedo/images/empty/thumbnail.jpg150150adminadminhttps://secure.gravatar.com/avatar/790df65a416873c3f0501d984b0b24a2f32bf2af0d1509085b901ade4bbb36e7?s=96&d=mm&r=g
Over the last year, the NTSB identified 68 bridges built before 1991 that don’t have a “current vulnerability assessment” and need to be evaluated. source
