flood damage Man in Alabama steps out of car to watch cracks forming on ground — then bridge collapses (video) Carla Sinclair
bridges Watch: Freeway overpass not-so-gently removes too-tall van being hauled atop a truck David Pescovitz
san francisco Engineers will attempt to fix the Golden Gate Bridge's eerie hum sound that freaks some people out David Pescovitz
bridges Portugal just opened the world's longest suspended footbridge, and it's not for people afraid of heights Mark Frauenfelder