
The SciencesMarch 1, 1993
Why America's Bridges are Crumbling
Inadequate maintenance has piled up a repair bill that will take decades to pay off. Indeed, the scope of the problem is only now becoming clear

Why America's Bridges are Crumbling
Inadequate maintenance has piled up a repair bill that will take decades to pay off. Indeed, the scope of the problem is only now becoming clear