Extras

Video thumbnail: NOVA How West Virginia's Silver Bridge Fell in 1967

NOVA

How West Virginia's Silver Bridge Fell in 1967

What is a single-point bridge failure?

How West Virginia's Silver Bridge Fell in 1967

Video thumbnail: NOVA Why Bridges Collapse Preview

NOVA

Why Bridges Collapse Preview

Can new engineering techniques help prevent deadly bridge collapses?

Why Bridges Collapse Preview

Video thumbnail: NOVA Survivors Recount Bridge Collapse in Genoa, Italy

NOVA

Survivors Recount Bridge Collapse in Genoa, Italy

Hear from two survivors of a tragic bridge collapse.

Survivors Recount Bridge Collapse in Genoa, Italy