Bridges are rated by a sufficiency rating that is an overall measure based on inspector ratings of many aspects of the bridge’s top deck and underlying structure. According to the National Bridge Inventory, the worst bridges, generally with a score below 50 percent, are classified as “structurally deficient” due to at least one defect that requires attention. Bridges that are “functionally obsolete” cannot handle the required traffic needs. A low score does not mean that a bridge will fall, but it indicates that it needs repair. Bridges with posted load limits are in greatest need of repair.

How many structurally deficient bridges are in your county?