More than half of the bridges in the United States are now rated as "fair" in ... or grating and can be covered with asphalt, concrete, or some other type of pavement. Regular maintenance of ...

Most of the covered bridges that previously existed in the United States have been destroyed in storms or fires or were simply removed to build newer, stronger bridges. Efforts to preserve not only ...

Bridges in the US, 241,000 are in fair condition ... or grating and can be covered with asphalt, concrete, or some other type of pavement. Regular maintenance of the deck is crucial to prevent ...